#99204: Geriatric Failure to Thrive: A Multidimensional Problem

The term "failure to thrive" was originally used to identify abnormal growth and development patterns in children. The term was borrowed from pediatrics in the 1970s to describe a similar syndrome that affected geriatric patients. Failure to thrive is a common diagnosis in geriatrics. As of October 2014, the Centers for Medicare and Medicaid Services (CMS) no longer accepts adult failure to thrive as a principal diagnosis for hospice claims, but it has been noted that access to hospice is not impeded by this fact because the principal diagnosis may instead be, for example, one of or a combination of cachexia, malnutrition, dysphagia, or muscle weakness, with an additional diagnosis of adult failure to thrive [4,5].

Failure to thrive is defined by the Institute of Medicine as "weight loss of more than 5%, decreased appetite, poor nutrition, and physical inactivity, often associated with dehydration, depression, immune dysfunction, and low cholesterol" [6]. It is not a single disease or medical condition. Rather, it is a multidimensional problem that requires a multidisciplinary approach for its treatment. The four chief characteristics of geriatric failure to thrive are impaired physical function, malnutrition, depression, and cognitive impairment [7]. Failure to thrive is commonly used as a nonspecific diagnosis when a patient loses weight due to an unknown cause. After the diagnosis is made, it stimulates further assessment and interventions. Each of the domains of geriatric failure to thrive should be evaluated to determine areas in which the elder is having difficulty.

Geriatric practitioners often order extensive diagnostic work-ups for these patients, which do not always reveal a reversible cause. It is a challenge to differentiate disease states common for older patients versus "normal aging." Furthermore, large amounts of Medicare dollars are paid to hospitals at the very end of the patient's life [8]. This raises the ethical dilemma of providing "futile care" that is cost intensive and yields few benefits.

Despite costly, time-intensive medical evaluations, 25% to 35% of patients with geriatric failure to thrive have no obvious medical cause for this weight loss [1,9]. If weight loss is attributed to the normal aging process, this can prevent early interventions from being employed.

Sarcopenia can be defined as an age-related loss of skeletal muscle mass and strength that usually occurs after 60 years of age [10]. Decreased strength leads to decreased function, and this functional decline can result in multiple complications, including falls, fractures, cognitive impairment, depression, and loss of independence. Nursing home residents are at special risk, as inactivity and immobility lead to muscle wasting [11,12,13]. This wasting is accelerated when nutritional deficits are present, and studies report that 18% to 60% of residents of nursing facilities are undernourished [14,15].

Cachexia is a physical wasting with weight and muscle mass loss, usually secondary to chronic progressive diseases such as cancer, acquired immune deficiency syndrome (AIDS), and chronic obstructive pulmonary disease (COPD). An estimated 10% of nursing home residents in the United States have cachexia [16]. Cachexia is a hypermetabolic state in which loss of body mass cannot be reversed nutritionally. The mechanisms that cause cachexia are poorly understood, but inflammatory cytokines and metabolic imbalances probably play a role [17,18]. Cachectic patients often have a poor prognosis due to multiple medical comorbidities. Cachexia is seen in the late stages of almost every major chronic illness, affecting an estimated 16% to 42% of people with heart failure, 30% of those with COPD, and up to 60% of people with kidney disease [18].

Anorexia of aging, also known as age-related wasting, is a complex problem with physical, psychologic, and sociologic causes [19]:

In addition, there is usually a component of sarcopenia and/or cachexia present. When undesired weight loss and/or malnutrition occur in the elderly patient, it becomes a complex problem requiring a multidisciplinary approach. Unless this syndrome is identified early and interventions begun, the prognosis can be quite poor. An age- or illness-related weight loss or physical decline can quickly progress to a terminal hospice diagnosis.

Advance healthcare directives allow the patient and family to determine what medical care is desired. State regulations vary regarding how and when advance directives can be used. It is important for healthcare providers to be familiar with laws governing the use of advance directives in the state in which they practice [22]. While it is desirable for a patient to have an advance directive, it may never be a condition of admission or continuance of their stay in a nursing facility.

When caring for any patient with failure to thrive, it should first be determined if advance directives exist, and copies of any documents should be obtained. If no advance directives exist, it should be determined if the patient is capable of making his or her own healthcare decisions. This is called a determination of capacity and usually requires the signatures of two physicians. If the patient is deemed incapable of making medical decisions, the healthcare proxy will assume the role of medical decision maker. A healthcare proxy is a person that is chosen by the patient/family to make healthcare decisions for the patient. If there is not a surrogate designated, a close family member or personal friend may be appointed the proxy.

There are many types of medical care that a living will can address [22]. A do not resuscitate (DNR) order is a pre-hospital determination stating that the patient does not want cardiopulmonary resuscitation (CPR), ventilatory support, or other heroic lifesaving measures. It is important to note that this does not prevent other life-sustaining treatments (e.g., artificial nutrition, hydration) and will not compromise the level of care given [22].

The concept of living wills grew from the limitations of DNR orders. These legal documents predetermine the medical care that will be accepted and refused. It may also designate a healthcare proxy or organ donation. If lifesaving or life-prolonging treatment is warranted and the patient is unable to communicate his or her preferences, the living will is activated. The living will should be as detailed as possible, and a physician should review the contents with the patient, if possible, to ensure understanding. A nutrition/hydration directive may be created in order to ensure that a patient's/proxy's wishes regarding nutrition and hydration care are followed. This clarifies whether a feeding tube may be inserted or IV fluids administered. In some cases, patients may refuse a gastric feeding tube but allow IV hydration or blood transfusion [22].

If a patient/proxy and healthcare provider determine that further hospitalizations would not be beneficial, a do not hospitalize (DNH) order may be made. A DNH allows care to be provided in a nursing facility or home. These orders are often made when further hospitalizations would most likely cause further pain, suffering, or complications, and the patient would rather be cared for by familiar caregivers. If a patient's/proxy's wishes are contrary to a healthcare professional's recommendations, he or she may be required to sign a refusal of treatment. This document indicates that the patient or responsible party has received informed consent regarding treatments, procedures, specialty referrals, diagnostics, and recommendations and has declined the recommendation. In addition, a waiver of responsibility may be necessary. This form is designed to relieve responsibility of the nursing facility when a patient does not follow recommendations. It is most commonly used when the patient/proxy refuses fluid restrictions, dietary modification, or thickened liquids. Many facilities do not allow waivers, as they may not adequately protect from litigation.

At times, advance directives may be difficult to implement due to pressure from family or the facility. When a patient has a living will and has clearly communicated end-stage desires and wishes to family, problems following a directive should be minimal. In other cases, there may be no advance directive and family members must make these difficult, and often divisive, decisions without knowing the patient's last wishes. Family members who may or may not have a close relationship with the patient can revoke living wills, DNRs, and other directives; they may be in denial of the patient's declining condition or have a personal agenda. Social workers are instrumental in the process of determining advance directives and communicating with families.

Medically futile care consists of medical diagnostics, treatments, or procedures that most likely will not provide a meaningful benefit to the patient. This is a difficult issue, particularly when the physician recommends withdrawing or withholding treatments and the family wants everything possible done. Ethics committees are useful resources when there is conflict that cannot be resolved.

It can take several hospitalizations or trips to the emergency room before family members or patients will be ready to sign DNR or DNH directives. In addition to debilitating illness, patients may be physically restrained at the hospital, usually to prevent them from falling or pulling out IVs or tubes. Physical or chemical restraint causes a forced immobility, potentially leading to pressure sores and muscle wasting.

Long-term care facilities have regulations and practices regarding physical restraints and have protocols to be followed when a restraint is required; some pride themselves on being a restraint-free environment. These facilities can utilize creative means to keep patients from harming themselves, including bed and chair alarms, activity programs, and low beds with mats on either side to prevent injury should the patient get up unassisted and fall. Physical and occupational therapists can be instrumental in initiating programs to promote patient safety and prevent falls. The least restrictive method of physical restraint is the most desirable for patients and facilities.

Gastric feeding tubes are commonly seen in nursing facilities, and they can be used for years to provide medications, hydration, and nutrition. Feeding tubes are routinely used for progressive neurologic diseases (e.g., Parkinson disease), stroke, and radiation therapy of the head or neck. However, gastric feeding tubes are not recommended for patients with advanced dementia, and there is no evidence that placement of a feeding tube improves the quality of life or survival in these patients [23,24]. Complications that can occur with a feeding tube include aspiration, infection, and tube dysfunction. In some cases, gastric feeding tubes prolong pain and suffering at the end of life. The impact of these potential complications should be considered before a gastric feeding tube is prescribed. Evidence-based information about feeding tube placement should be given to patients and family members to assist them to make informed decisions.

According to the American Academy of Family Physicians, unintentional weight loss of 5% or greater within 6 to 12 months is associated with increased morbidity and mortality in older adults and should prompt evaluation.

(https://www.aafp.org/pubs/afp/issues/2021/0700/p34.html Last Accessed: March 22, 2024)

Level of Evidence: B (Consistent findings from multiple prospective cohort studies with good follow-up)

Most nursing facilities have protocols to be followed when a resident has a 5% weight loss in one month or a 10% weight loss in six months. Physician notification, dietician consults, and speech therapy evaluations are usually the first interventions.

Dieticians perform nutritional assessments, recommend liquid supplements, discontinue restrictive diets, obtain calorie counts, determine food preferences, recommend protein supplements, and add nutritious snacks. Dieticians or dietary technicians should evaluate a patient's nutritional status regularly: upon admission to a nursing facility, quarterly, and in case of significant change in weight.

The Mini Nutritional Assessment (MNA) is a validated tool often used to evaluate the nutritional status of elderly persons [25,26,27]. The MNA is inexpensive, quick, and easy to administer. The short-form version consists of a six-item checklist that assesses the patient's food intake, mobility, weight loss, psychologic stresses and problems, and body mass index (BMI). Calf circumference can be substituted if BMI cannot be obtained. The MNA can quickly identify elderly at risk of malnutrition and guide nutritional intervention. A copy of the MNA may be accessed online at https://www.mna-elderly.com.

Assessment and interventions for causes of dysphagia are often necessary in patients with geriatric failure to thrive. A speech therapist will evaluate the patient's swallowing ability and can test for sensory deficits. Dysphagia assessments may include bedside assessment of swallow, the videofluoroscopic swallowing study (VFSS), and the fiberoptic endoscopic evaluation of swallowing (FEES) [28,29]. Both the VFSS and the FEES can detect laryngeal penetration, tracheal aspiration, and pharyngeal residue. The VFSS is more commonly known as the modified barium swallow study, which is usually performed at acute care or diagnostic facilities [28].

During the assessment period, the speech therapist will try different food and fluid consistencies. Thickening of liquids is one of the most common treatments for dysphagia, and thickened liquids are routinely tried during modified barium swallow studies, especially if a patient demonstrates difficulty with thin liquids. The degrees of thickness or viscosity are generally categorized as regular or unthickened (nothing added); nectar-like or nectar-thick; honey-like or honey-thick; or pudding-like or pudding-thick [30]. After assessment and testing, the speech therapist will determine the consistency of food and fluids most appropriate for the patient.

Patients often are at risk for aspiration secondary to dysphagia, and this complication is considered life-threatening. Therefore, patients with a diagnosis of dysphagia should be carefully monitored for signs of choking and/or pneumonia. Signs of dysphagia or aspiration include [31]:

After a thorough assessment of a patient's swallowing and speaking ability is complete, a program to restore nutrition and intake by mouth will be established. The restorative dining program consists of intensive education, assistance, and supervision with meals to restore swallowing ability. The speech therapist may also work with patients with gastric feeding tubes in order to restore oral feedings.

The use of neuromuscular electrical stimulation (NMES) to provide assistance in swallowing rehabilitation has been extensively studied. This involves the application of electrodes to the neck that provide small electric currents to strengthen and retrain the muscles involved in swallowing. Patients who are unable to regain their swallowing function after a stroke or other debilitating illness may be good candidates for this type of therapy, especially when other techniques have failed. Most experts agree that NMES is a promising technique for swallowing rehabilitation; however, they also state that additional research is needed to provide evidence of its efficacy [32,33,34,35,36].

In cases of irreversible dysphagia, a gastric feeding tube may be the only option to maintain nutrition. Either the patient or the healthcare proxy may decline a feeding tube and elect to have oral feedings despite the risk of aspiration and choking. This is an instance in which obtaining a waiver of responsibility may be appropriate. Some facilities may be uncomfortable allowing a patient to eat a regular diet or drink thin liquids when tests have proven the patient to be at high risk for aspiration. It is important to note that a waiver may not provide adequate legal protection against litigation.

It is important to evaluate patients for metabolic or treatable causes of weight loss, including cancer. The incidence of cancer increases with age, and screening for cancer and evaluation of risk factors are essential parts of the assessment of geriatric failure to thrive, with special focus on screening for the most common types of cancer (Figure 2).

MOST COMMON SITES OF NEW CANCER DIAGNOSES AND CANCER DEATHS, 2024: MALE AND FEMALE, UNITED STATES—ALL RACES

Figure 2

Source: [37]

Each patient should be carefully evaluated on an individual basis, taking into consideration patient age, advance directive, and functional and mental status. Clear communication with the patient and/or healthcare proxy along with clarification of any and all advance directives is necessary. Patients or patient representatives should feel empowered to accept or decline diagnostic procedures or treatments.

Digital rectal exam (in men), fecal occult blood test, prostate-specific antigen test (PSA), breast exam or mammogram (in women), and a chest x-ray are vital aspects of a comprehensive cancer screening when cancer is suspected; routine screening of older individuals with limited life expectancy is generally not recommended. Diagnostic and laboratory tests may be completed, even when surgery or treatment is not advised, in order to guide the treatment of geriatric failure to thrive.

A thorough baseline evaluation is necessary for all patients with unexplained weight loss. History taking and a complete and accurate physical assessment lay the foundation for further treatment, monitoring, and follow-up. A patient's baseline physical function and health should be determined before assessing for abnormalities. Changes associated with normal aging may include loss of subcutaneous fat from face and periphery (re-deposited to the abdomen and hips), shorter stature, shrinkage of muscle mass, kyphosis, and senile ptosis or ectropion. Many geriatric patients have chronic medical conditions, and seemingly abnormal exam findings may actually reflect these long-term illnesses (Table 1) [7]. Common findings in the geriatric patient may include heart murmurs and cardiac arrhythmias, chronic skin lesions such as seborrheic keratoses, orthostatic hypotension, sensory deficit (e.g. visual, hearing), and arthritic deformities. Good history taking with input from family members and staff will help differentiate problems that require intervention from normal findings for that patient. In addition to standard physical assessment, special attention should be paid to cancer detection, as discussed, and gastrointestinal tract disorders.

The initial physical assessment includes baseline measures of BMI, height, weight, triceps skinfold measurement, calf measurement, full vital signs, and oxygen saturation. To calculate the BMI it is necessary to have an accurate height and weight. BMI calculators and charts are readily available for easy calculation. If either height or weight is unavailable, calf circumference may be used. Patients with a BMI of less than 22 are considered at risk (Table 2).

Oral examination findings in patients with geriatric failure to thrive may include candidiasis, dental problems, oral lesions, xerostomia, and post-nasal drainage. Monitoring oxygen saturation while having the patient swallow fluids can detect risk of aspiration. Choking or coughing while drinking fluids may or may not indicate aspiration; coughing may actually be a defense mechanism preventing aspiration. If a patient's oxygen saturation drops while eating or drinking, further evaluation and referral to speech therapy is necessary.

Xerostomia, or dry mouth, is a common complaint in geriatric patients [9]. It can be a side effect of a medication or of radiation to the head or neck. Poor dentition is a contributing factor. Over-the-counter sprays, mouthwashes, hard candies, or ice chips can provide some relief. Medications with anticholinergic effects are not generally recommended for elderly patients due to potential adverse effects, such as dry mouth, dysgeusia, constipation, and changes in mental status [7]. If the use of an agent with anticholinergic effects is necessary, the lowest effective dose should be utilized.

Referral to a dentist for management of any dental problems or concerns is crucial. Dental problems lead to decreased oral intake and weight loss. Caries and broken teeth should be restored, and the fit of dental prosthesis should be verified.

Post-nasal drainage and vasomotor rhinitis can contribute to decreased nutritional intake. In these cases, treatment of allergic conditions can help improve oral intake.

Auscultation of the heart and lungs is also necessary in order to evaluate chronic diseases and detect new problems [7]. Normal age-related changes to physiology and parameters should be noted. The chest often increases in anteroposterior diameter with aging. Occasional ectopic beats are common and do not necessarily indicate underlying heart disease. Systolic blood pressure commonly increases with age; diastolic blood pressure usually stays constant. For patients with abnormal cardiovascular findings, additional diagnostics include chest x-ray, electrocardiogram, echocardiogram, and 24-hour Holter monitoring.

Disorders of the gastrointestinal tract can cause weight loss. The aging abdomen often has increased deposits of subcutaneous fat and thinner musculature. Peristalsis may be visible, in the absence of obesity. Osteoporotic kyphosis causes a protuberant appearance of the abdomen. Medications may cause gastrointestinal side effects, such as nausea, heartburn, and constipation.

Examination of the abdomen may reveal hepatomegaly, masses, constipation, distention, hernias, ascites, and tenderness. Bowel and bladder patterns and function should be assessed, using the patient's normal patterns as a baseline. Conditions such as atrophic gastritis, gastric or peptic ulcer, constipation, lactose intolerance, diverticulosis, colitis, and diabetic gastroparesis may be the cause of significant weight loss. Diagnostic approaches for abnormal exam findings may include abdominal or pelvic ultrasounds, fecal occult blood test, and kidneys, ureters, and bladder x-ray. Referral to a gastroenterologist can be crucial for patients' treatment and outcome.

Thyroid function should also be assessed, as both hypothyroidism and hyperthyroidism may result in impaired absorption of nutrients and weight fluctuations. Some patients with hypothyroidism may develop decreased peristalsis, leading to chronic constipation and impaired absorption of nutrients. With hyperthyroidism, patients may display increased appetite secondary to increased peristalsis, diarrhea, and weight loss. If there is accompanying vomiting with abdominal pain, this can lead to malnutrition and a negative nitrogen balance. Screening for thyroid dysfunction, and treating when present, may improve weight loss in some elderly patients.

The neurologic assessment should include sensory evaluation, cranial nerves, focal deficits, strength against resistance, and ambulation/gait evaluation. Documentation of baseline functional status is necessary, noting any assistive devices the patient uses for ambulation, including any splints or braces. If a patient is non-ambulatory and requires assistance for activities of daily living, this should be documented. Elderly patients may have slower responses, benign tremors, and a slower and more deliberate gait. Deep tendon reflexes are less brisk. Assessment of cognitive and mental status is an important aspect of the neurologic evaluation and will be thoroughly explored later in this course.

Baseline physical assessment lays the foundation for the ultimate plan of care. It also facilitates diagnosis of comorbid medical conditions. Documentation of serial measures of BMI, weight, and triceps skinfold thickness will help to track progress or decline. Depending on the patient's progress, the treatment plan can be revised or continued.

Impaired physical function is one of the four domains of geriatric failure to thrive, and evaluation of physical functioning is an integral part of the geriatric evaluation [7]. It is important to determine any changes in mobility and evaluate for signs of a functional decline. This decline may be rapid, in cases of hospitalization and severe illness, or gradual, with the patient experiencing decreased mobility and independence over a period of time. Occupational therapists can provide a complete assessment of a patient's mobility and ability to perform activities of daily living (ADLs) and instrumental activities of daily living (IADL). The Katz ADL scale assesses six activities: bathing, dressing, toileting, transferring, continence, and eating [38,39]. The Lawton IADL scale assesses a patient's ability to use the telephone, shop, take transportation, manage a budget, adhere to medication regimens, cook, and perform housekeeping and laundry chores [40]. Approximately 34% of adults 65 years of age or older reported having some type of disability (i.e., difficulty in hearing, vision, cognition, ambulation, self-care, or independent living), and 49% of adults 75 years of age and older reported having difficulty in physical functioning. This ranged from 5% reporting it was very difficult (or impossible) to sit for two hours, to 33% reporting it was very difficult (or impossible) to stand for two hours [3]. For patients with failure to thrive, assessment of eating and ability to feed oneself is particularly important. Recommendations regarding contracture management and prevention, need for splints, positioning in wheelchairs or specialty chairs, and the need for assistive devices to help with eating may be made. A rehabilitation plan to assist the patient to regain independence in daily activities can be helpful.

The patient's current strength, mobility, balance, and safety awareness should all be evaluated. Based on this assessment, assistive devices, such as walkers, canes, wheelchairs, and splints, may be prescribed. For a patient who has declined in function, a physical therapist may create a plan of rehabilitation to return the patient to his or her prior level of function. Rehabilitation may include therapeutic exercises, resistance exercise training, pain management modalities, and gait and ambulation training [41,42].

Polypharmacy has been described as the use of more than 5 medications, and excessive polypharmacy is defined as the use of more than 10 medications [43]. Known hazards of polypharmacy include lack of adherence, overtreatment, adverse drug reactions (including unexplained weight loss), and incorrect dose and administration regimen. In addition to these factors, physiologic changes of aging cause differences in the absorption, distribution, metabolism, and excretion of medications [44].

Elderly patients commonly take medications for many chronic conditions, including diabetes, hypertension, arthritis, and cardiovascular disease, making them at increased risk for the adverse effects of polypharmacy. Geriatric illnesses are often more complex and require referral to medical specialists. Each specialist may order diagnostic testing and medications without a complete knowledge of the patient's comorbidities and other treatments [44]. The primary care provider should perform a risk and benefit analysis to evaluate the need for multiple medications or tests. The primary care provider may then accept or refuse the specialist's recommendation, but should justify any refusal.

Assessment of each patient's medication regimen is crucial and should identify medications that may be causing problems. In each evaluation of a geriatric patient, medication side effects should be an initial consideration, including evaluation of over-the-counter medications, vitamins, and herbal remedies and supplements [44].

As an elderly patient begins to decline or lose weight, some previously prescribed medications may no longer be necessary. For example, lipid-lowering medications may not be necessary in patients who have lost weight or declined. Diuretic doses should be adjusted as necessary, as overdosing can cause azotemia. Insulin dosages should be titrated to reflect weight loss or poor food intake. Collaboration with multiple specialists may be beneficial to determine the necessity of certain medications. For example, a cardiologist may be consulted before stopping or changing doses of beta-blockers or angiotensin-converting enzyme inhibitors.

The risks of certain medications may outweigh the potential benefits in many cases. For instance, a patient 85 years of age with a longstanding history of treatment for atrial fibrillation may no longer be a candidate for anticoagulants. If the patient is at risk for falls, gastrointestinal bleeding, or hemorrhagic stroke, the risks of anticoagulation outweigh the potential benefit and the medication should be stopped. Another important consideration is the patient's adherence to prescribed medications and necessary monitoring. Patients who cannot or will not undergo regular blood test monitoring should not be on a warfarin regimen.

Patients with dysphagia may require changes to their medication routes to accommodate the condition. In some cases, medications may be crushed; if this method is chosen, controlled-release medications should be changed to a formulation that allows this administration. A nurse or family member can provide information regarding whether the patient requires crushed or liquid medications and whether the patient refuses any medications. Consultation with a pharmacist may help to identify any medications that can be reduced or stopped. The consultant pharmacist usually reviews the records monthly and makes recommendations according to state regulations.

The Beers list is a collection of medications potentially inappropriate for the elderly patient for a variety of reasons [45,46]. This list identifies medications not recommended for patients 65 years of age or older and identifies potentially harmful prescribing practices. Certain medications may be detrimental to elderly patients due to extended half-lives, interactions, or side effects. For example, benzodiazepines are associated with risk of cognitive impairment, delirium, falls, fractures, and motor vehicle accidents in the elderly, and before prescribing these medications, it should be clear that the potential benefits outweigh the risks [46]. Common medications on the Beers list include alprazolam, digoxin, cimetidine, diphenhydramine, lorazepam, and naproxen [45,46].

Many patients take over-the-counter allergy, cold, or cough medications as sleeping aids, some of which contain acetaminophen/diphenhydramine. Elderly patients should be advised to avoid such use, as diphenhydramine is associated with falls in this population; another sleep aid can be prescribed [46,47]. Medications that patients have taken for years may require re-evaluation if changes in health status occur.

There are a variety of laboratory and diagnostic tests available to evaluate elderly patients whose health is failing, but it is important to refrain from ordering unnecessary tests that will not benefit the patient. Initial laboratory tests to evaluate unintentional weight loss include complete blood count, chemistry profile, thyroid, carcinoembryonic antigen in patients with cancer, urinalysis with culture (if indicated), and fecal occult blood test. Further laboratory and diagnostic tests should be guided by the results of these tests and by history, physical exam, and patient wishes. More extensive testing can include a chest x-ray, PSA, tumor markers, nutritional markers (e.g. vitamin D, vitamin B complex), anemia work-up, drug levels (e.g., phenytoin, digoxin), prealbumin, and albumin.

Cognitive impairment is another domain of geriatric failure to thrive. To fully evaluate geriatric failure to thrive, it is necessary to also assess psychologic and sociologic functioning. The Mini-Mental State Examination (MMSE) or Folstein test may be used as an objective assessment of cognition, either to establish a baseline measurement of mental status or to track progress or decline [48]. It is a 30-item exam that takes approximately 10 to 15 minutes to complete. A correct answer for each item is awarded 1 point, and a score of 25 or more is considered normal. Lesser scores can indicate severe (≤9 points), moderate (10–20 points), or mild (21–24 points) cognitive impairment. It is helpful to document serial scores in the medical record.

Another screening test for dementia is the clock drawing test [49,50]. There are variations in how this test is administered, but it generally consists of asking the patient to draw a picture of an analog clock, complete with numbers, set to a certain time. In some cases, the circle will be predrawn for the patient. Just as there are variations in the test, scoring methods also vary. One system is based on a score of five points as follows: 1 point for the clock circle, 1 point for all the numbers being in the correct order, 1 point for the numbers being in the proper place on the clock face, 1 point for the two hands of the clock, and 1 point for the correct time. Scores of 4 or 5 are considered normal. Studies are mixed on whether the complicated scoring, which is used to determine the severity or stage of dementia, is more effective than a simple pass/fail, but the consensus among experts is that the test is useful for determining whether further testing is required, regardless of the scoring method used [51,52].

This clock becomes part of the medical record and can clearly identify moderate-to-advanced cognitive impairment, although it is not sensitive for mild cognitive impairment or early Alzheimer disease. The clock drawing test is cost-effective and can be performed by trained assistants. Serial clock drawings incorporated into the medical record can document the onset and progression of dementia for geriatric clients [53].

Geriatric Depression Evaluation

Depression is a major cause of weight loss in the elderly, and geriatric depression is a significant health risk, affecting function and quality of life. Assessment for depression is crucial in the patient who has had an unintentional weight loss. Delay in diagnosis may accelerate the decline associated with failure to thrive and may increase morbidity and mortality [7]. Geriatric patients have often experienced multiple losses, including the death of a spouse, peers, or children; loss of independence; loss of health or mobility; and loss of physical or financial independence. Each of these events can induce depression.

The stigma of psychiatric illness may prevent elderly patients from seeking help for depression. They are more likely to complain of physical problems than to mention conventional depressive symptoms (e.g., mood changes) [7]. Therefore, screening should be incorporated into each clinical contact with a geriatric patient. Depression in the elderly may present with confusion, forgetfulness, apathy, slowing of thinking and movement, lack of interest in personal hygiene, and unexplained physical symptoms, including weight loss; however, these signs are often misdiagnosed as dementia in the elderly, making accurate assessment essential [7]. Disruption in sleep, changes in appetite, and psychomotor changes may prompt a patient to seek medical care. When a patient has multiple vague physical symptoms, depression should be included in the differential diagnosis. Suicidal ideation or attempt should be considered a medical emergency.

The Geriatric Depression Scale (GDS) is a self-report measure of depression that may be utilized to screen for depression in elderly patients (Figure 3) [7,54,55]. The shortened version (GDS-S) consists of 15 questions (taken from the long form) that assess mood and hopelessness. The GDS-S can be completed in five to seven minutes, which makes it ideal for patients who are easily fatigued or limited in their ability to concentrate for longer periods of time [55]. A score of 5 or greater on this test is considered positive. If a test is positive, referral to a psychiatrist specializing in geriatric patients should be made, as these patients do respond to depression treatment (e.g., psychotherapy, pharmacotherapy).

GERIATRIC DEPRESSION SCALE (SHORT FORM)

Figure 3

Source: [56]

Older patients who present with dehydration, malnutrition, and/or failure to thrive may be exhibiting signs of neglect or abuse. In a systematic review that represented 28 different countries, the overall prevalence rate of elder abuse was assessed at 15.7%; 11.6% had experienced psychologic abuse [57]. It is estimated that approximately 1 in 10 Americans older than 60 years of age has been the victim of abuse, including physical abuse, psychologic or verbal abuse, sexual abuse, financial exploitation, and neglect [58,59,60]. Denying food has been explicitly identified as a form of neglect.

Persons being assessed for geriatric failure to thrive should be evaluated for abuse. Certain situations may make some elders more vulnerable to elder abuse [61]. Any elder, for example, who is incapable of taking care of his/her own daily needs and is dependent on another person is automatically in an at-risk situation. The Elder Abuse Suspicion Index (EASI) is a five-item tool that provides practitioners with a very quick sense of whether there is potential presence of elder abuse [62]. It is validated to screen for abuse in patients who are cognitively intact [63]. The EASI has been recommended by the U.S. Preventive Services Task Force and was originally developed for use by physicians, but it can be used by practitioners in diverse disciplines [64]. The following items comprise the index [62]:

Family meetings may be difficult but are often productive interactions. These conferences provide an opportunity to present the results of the specialty consults and the tests and assessments that have been performed and for the patient and family to ask questions or request additional information. If further medical care and treatments would be futile or serve to prolong the dying process, this should be conveyed to the patient and family. Advance directives should be reviewed and updated. Any concerns expressed by the patient or family should be fully addressed. The healthcare provider, family members, and patient should leave the meeting with an agreement regarding the plan of care and treatment desired. When patients and family members have a good understanding of the options available, including potential benefits and risks, they are in a position to provide informed consent, and this can help to prevent misunderstandings later.

Correction of vitamin and nutritional deficits is necessary to reverse malnutrition. As such, collaboration with a dietician and a speech therapist is essential when caring for patients with failure to thrive. The speech therapist can determine the consistency of food best suited for the patient's needs and can recommend modifications to the established diet. The patient may require thickened liquids, puréed diet, mechanical soft diet, or other variation. Some patients will benefit from a restorative dining program, as supervision, encouragement, and socialization may increase food intake.

Discontinuation of restricted diets is an appropriate step for the patient with malnourishment. Therapeutic and restrictive diets do not promote adequate energy intake and should be thoroughly reviewed for each patient [65]. For example, the American Dietetic Association recommends a liberalized diet approach for nursing home residents [66]. A dietician should assess patients' food preferences and determine if oral nutritional supplements would be appropriate and accepted by the patient. The most common approach is to provide liquid nutritional supplements, shakes, and puddings between meals, with the goal of increasing calorie consumption. Geriatric patients may eat most of their calories at breakfast, which should be accommodated. It is important to provide high-calorie, fortified foods when the patient's appetite is greatest [7].

The first line of treatment for most patients living in nursing facilities is administration of oral liquid nutritional supplements. These are added to the plan of care and generally administered by nursing staff and dietary assistants. Compliance with the treatment plan can be an issue, and it is essential to evaluate whether the supplements are offered and taken as prescribed.

Fortified foods are prepared with extra protein and calories to provide a more calorie-dense food. The addition of one-third cup of instant, nonfat dry milk adds 80 calories, 8 g protein, and 12 g carbohydrates. The addition of butter, milk, and cream boosts calorie intake as well, and oral protein supplements are available to help reverse protein malnutrition. Making the supplements appealing to the patient is an ongoing challenge.

Families can play a large role in reversing malnutrition in a nursing facility. When the family is present for a meal or brings in the patient's favorite food, intake is improved [7]. Patients may complain that they do not like the food that is served, and family members are better equipped to cater to any ethnic preferences. Family members can often coax their loved one to eat their meal and take liquid nutritional supplements. Dedicated staff members and caregivers can promote positive outcomes by making sure supplements are offered and taken.

In addition to multiple medical comorbidities and psychiatric disorders associated with aging (e.g., dementia), the geriatric patient may have longstanding psychiatric illness, such as bipolar disorder or psychosis, requiring multiple medications [76]. This makes treating the geriatric psychiatric patient quite complex.

There are multiple long-term complications associated with typical and atypical antipsychotic medications, including pharmacokinetic and pharmacodynamic changes, limitations, and cardiovascular and other adverse effects (e.g., gastrointestinal, liver) [76]. A patient may develop a Parkinsonian syndrome secondary to long-term antipsychotic use, resulting in dysphagia, tremors, difficulty performing activities of daily living, and difficulty feeding, all of which can result in unintentional weight loss [76]. Prior to changing longstanding medication regimens, a geriatric psychiatrist should be consulted in order to help prevent exacerbation of the underlying psychiatric illness.

Psychiatric symptoms associated with dementia, such as anxiety or agitation, may cause an increased energy demand. Psychiatric symptoms such as pacing, hyperactivity, repetitive behaviors, insomnia, and mania all can lead to weight loss. These symptoms should be effectively managed. Referral to a psychiatrist or psychologist is recommended in cases of continued weight loss, treatment failures, and additional behavioral problems.

The American Geriatrics Society recommends avoiding the use of prescription appetite stimulants or high-calorie supplements for treatment of anorexia or cachexia in older adults; instead, they recommend optimizing social supports, discontinuing medications that may interfere with eating, providing appealing food and feeding assistance, and clarifying patient goals and expectations.

(https://www.americangeriatrics.org/sites/default/files/inline-files/AGS%20Choosing%20Wisely%20Poster.pdf Last Accessed: March 22, 2024)

Level of Evidence: Expert Opinion/Consensus Statement

Potential underlying causes of unintentional weight loss should be fully assessed and treated prior to initiating pharmacotherapy for geriatric failure to thrive. Each patient should be evaluated on an individual basis prior to prescribing an appetite stimulant. The medications commonly used and discussed in the following section are not approved by the U.S. Food and Drug Administration (FDA) for appetite stimulation in patients with failure to thrive.

Patients being treated for geriatric failure to thrive will undergo regular physical and occupational therapy; the progress reports for this therapy should be reviewed with the patient and family, at which point one can discuss any medical concerns that may be interfering with rehabilitation, including dizziness, medication side effects, uncontrolled pain, unresolved infections, and balance problems. Recommendations for adaptive or assistive devices based on these reports may be made. Referral to neurology, rheumatology, or orthopedics may be considered if physical function is drastically impaired [7].

Patients should be weighed and have a BMI calculated weekly; this can decrease to monthly as the patient stabilizes. A speech therapist will continue assessing for dysphagia. It is important to monitor intake, particularly of liquid oral supplements and vitamin, mineral, and protein replacement. This requires ongoing dietician assessment and monitoring of nutritional status and consideration of a gastric feeding tube, when appropriate. Some patients will require referral to gastroenterology for treatment of underlying medical conditions leading to poor intake (e.g., gastroesophageal reflux contributing to dysphagia, esophageal stricture requiring dilation). Patients should also be assessed for oral pathology, ill-fitting dentures, speech or swallowing difficulties, medication use that might cause anorexia or dysgeusia, and financial or social problems [7].

Depression is the most common psychiatric condition in older persons [7]. Geriatric patients with failure to thrive should continue to be evaluated for signs and symptoms of depression and suicidal ideation. If prescribed, the efficacy of antidepressant therapy should be monitored, including adverse drug reactions and necessary adjustments in the medication regimen. Referral to a social worker, psychiatrist, and/or psychologist is strongly advised.

Evaluation of psychosocial function should include an assessment of the patient's cognitive status, mood, and social setting [7]. Any behavior problems should be reviewed with the patient, family, and staff. Results of cognitive assessments, such as the MMSE and the clock drawing test, should be evaluated on a regular basis. The role of medical conditions or medication side effects should be considered. If dementia treatment has been attempted, efficacy of the prescribed regimen will be assessed. If necessary, the patient may be referred to neurology, psychiatry, or social work.

Patient E is a woman, 82 years of age, recently hospitalized for pneumonia. Her medical history is positive for hypertension, diabetes, coronary artery disease, and heart failure. She is admitted to the rehabilitation center with functional decline, unsteady gait, weight loss, and difficulty swallowing; the rehabilitation will be short term.

During the initial medical evaluation, the patient appears frail, alert, and cooperative. She is able to answer questions appropriately. Patient E has been living alone in a senior independent living apartment for the last seven years. She has a daughter who lives nearby who is very involved in her care. The daughter states that Patient E has been slowly losing weight over the last six months. The patient states she has never been a big eater but admits her appetite is not what it used to be. The daughter has noticed the patient coughing and clearing her throat frequently while eating. Since the pneumonia, Patient E has had poor activity tolerance and requires frequent rest periods.

Patient E has both a healthcare proxy and a DNR on record. Her chief complaints are fatigue, poor appetite, leg weakness, and nonproductive cough. Her weight is 107 pounds and height is 5 feet 4 inches, with a BMI of 18.4, which is slightly underweight. She appears frail, though alert and cooperative. She is in no apparent pain or distress sitting up in a wheelchair. Upon initial physical examination, her blood pressure is 104/60 mm Hg, apical pulse 86 beats per minute, regular rate and rhythm with systolic ejection murmur (grade 2/6). Her respirations are 22 breaths per minute, with an oxygen saturation of 92% (on room air). Respirations are even and unlabored at rest, and crackles are noted in the right base. Patient E's abdomen is soft and nontender with active bowel sounds. Trace ankle edema are present bilaterally, and muscle atrophy and kyphosis are noted. The patient displays no focal deficit, and cranial nerves are normal.

Several assessment tests are administered, and the scores of each are noted:

In addition, several laboratory/diagnostic tests are ordered. The results are as follows:

A chest x-ray shows right lower lobe infiltrate and cardiomegaly. Finally, the modified barium swallow test indicates aspiration on thin liquids.

The patient is referred to several specialists for evaluation of potential causes of weight loss and continued failure to thrive. After two weeks, the results of the consultations are available. The physical therapist indicates muscle disuse atrophy of both lower extremities, poor endurance, and dizziness upon standing; however, the patient is able to walk 10 feet with assistance and walker. Occupational therapy indicates that Patient E requires assistance with bathing, dressing, and eating. The speech therapist recommends that the patient be placed on a mechanical soft diet with thickened liquids. Finally, the dietician finds that the patient's appetite is fair to poor, as she eats only 25% to 50% of meals. Patient E is resistant to modified diet and supplements; therefore, the dietician recommends liberalization of diet to regular with fortified foods.

Based on abnormal exam and laboratory findings, Patient E is diagnosed with anemia, chronic kidney disease, pneumonia (still on treatment), and functional decline, particularly a decline in mobility and nutritional status. She also displays evidence of vitamin and mineral deficiencies, with low vitamin D, protein, and zinc levels. Her vitamin B12 level is also borderline low. The blood pressure is below normal and may be responsible for the patient's dizziness. She is malnourished, with a low BMI, and symptoms of depression are present.

Patient E is taking several daily medications, all of which are assessed for necessity and potential interactions. Her current regimen includes:

Evaluation of the medication regimen indicates that the patient's dizziness or weakness upon standing may be due to medication side effects. Furthermore, metoprolol is associated with fatigue in the elderly. Patient E's diuretic dose may need to be decreased due to her elevated BUN level. Metformin is not recommended in patients older than 80 years of age or with creatinine levels 1.4 mg/dL or greater. As a result of this information, the physician orders that the patient's prescriptions for furosemide and potassium chloride be halved to 20 mg/day and 10 mEq/day, respectively. The metoprolol dose is tapered gradually and held if the systolic blood pressure is less than 110 mm Hg.

In addition to adjustments to the patient's existing medication regimen, it was determined that Patient E could benefit from the addition of a medication to address the signs of osteoporosis and a vitamin and mineral supplement. The physician prescribes calcium carbonate with vitamin D 500 mg/200 mg twice daily as well as a daily multivitamin. To treat the patient's depressive symptoms, 7.5 mg of mirtazapine is prescribed to be taken at bedtime.

Supplementary diagnostic tests are ordered, including anemia profile, ferritin level, stool for presence of occult blood, and folate level. Patient E is instructed to return in one week for a follow-up appointment, at which time another blood test and metabolic profile will be completed.

When Patient E returns for her one-week follow-up appointment, her lungs are clearer and she appears to be more alert. Although she continues to complain of fatigue and poor endurance, she is experiencing less dizziness. She has completed the antibiotic therapy for her pneumonia and has been participating in skilled therapy, increasing her assisted walk distance to 25 to 50 feet.

Her vital signs are normal, indicating a blood pressure of 112/64 mm Hg, pulse 88 beats per minute, and respirations 18 breaths per minute.

The patient intake has also improved, as she is reportedly consuming 50% of most meals and accepts one to two cans of liquid supplement daily. She has gained three pounds, to a weight of 110 pounds and a BMI of 18.9, which is considered healthy. Her completed blood test and metabolic panel indicate the following values:

The physician instructs Patient E and her family to continue on the current plan of care. She is scheduled for a follow-up chest x-ray to confirm the absence of pneumonia, and she is instructed to return to the physician in one month to evaluate the continued effectiveness of the treatment plan.

At her one-month follow-up appointment, Patient E has continued to have daily rehabilitation and her weight has stabilized. She is lucky to have the support of her daughter, who encourages her through the process. Her medical conditions have stabilized, which required adjustments to her medication regimen. The patient has progressed well and is discharged home to her apartment. Future considerations for health maintenance include a dual-energy x-ray absorptiometry scan to evaluate osteoporosis treatment, a mammogram, and a colonoscopy.

Patient S is a man, 70 years of age, who was admitted to the hospital with altered mental status, exhibiting symptoms of delirium, agitation, and confusion. He was found to have a urinary tract infection and obstructive uropathy leading to acute renal failure. His condition is stabilized, and he is admitted to the rehabilitation facility. The physician completed the initial assessment shortly after his admission to the rehabilitation center. Findings from medical record review indicate a positive history for hypertension and hyperlipidemia. The patient has no advance directives on record, and medical care prior to hospitalization was sporadic. Patient S has lived in a studio apartment for 12 years and does not have any close family members. His support system consists of friends and neighbors. He smokes one-half pack of cigarettes per day and usually drinks two to three beers each day. Prior to hospitalization, he was found by a neighbor; he was delirious, with poor hygiene and incontinent of urine and stool.

Patient S is examined while sitting bedside. His chief complaint is pain in his right knee with walking, though no injury is noted. He also complains of stomach discomfort, gas, and constipation. The patient appears to be suspicious of the physician and makes it clear that he is not staying long. He requests discharge as soon as possible. The patient has gaps in his memory as to what happened prior to hospitalization. He indicates that he eats regularly and does not know why he has lost weight. When dinner is provided, he requests that a beer be provided as well. The Foley catheter is maintained pending further urologic evaluations and treatments.

The initial physical examination indicates that Patient S's height is 5 feet 8 inches, weight 140 pounds, and BMI 21.3; however, the patient's usual weight is 158 pounds. His blood pressure is 134/82 mm Hg, apical pulse 82 beats per minute, and respirations 20 breaths per minute. He has poor dentition, but the mouth is otherwise healthy. The lungs are essentially clear, with slightly diminished breath sounds in the bases. His abdomen is soft and nontender, with active bowel sounds, and the Foley catheter is draining clear, yellow urine. The right knee is mildly edematous and warm to touch. Slight resting tremor is noted of the right hand, but there is no focal deficit. A complete blood test, metabolic panel, and knee x-ray are ordered, as are physical therapy, occupational therapy, speech therapy, and dietician evaluations.

Assessments of function, nutrition, and depression are administered and indicate:

The laboratory tests return the following results:

The knee x-ray displays evidence of mild degenerative joint disease. The physical therapist's report indicates that Patient S has weakness of the lower extremities with unsteady gait. The patient's right knee pain is causing limited range of motion and mobility. In spite of these limitations, the occupational therapist finds that the patient requires minimal assistance with activities of daily living and hygiene. The speech therapist finds that the patient has poor short-term memory and retention, but no difficulty swallowing. Finally, the dietician notes that Patient S eats about 50% of most meals, refuses liquid supplements, and refuses to go to the dining room because "it is depressing looking at all those sick people."

Because the patient has no advance directives on file, he is referred to a social worker for assistance in planning his care. The patient declines DNR and names a neighbor as his healthcare proxy. The social worker notes that it is questionable if the patient will be able to live alone after rehabilitation is completed due to the lack of regular caregiver and the presence of cognitive deficits.

Finally, the patient's medication regimen is assessed. Patient S is currently prescribed the following medications:

Based on the laboratory and examination findings, Patient S is diagnosed with moderate cognitive impairment/dementia and has symptoms of depression. The degenerative nature of the patient's joint impairment indicates osteoarthritis of the right knee. Alcohol dependence is suspected, though the patient refuses assistance with smoking or alcohol cessation. The patient is dyspeptic and constipated. He has developed obstructive uropathy due to undercare of urology.

Assessment of Patient S's medication regimen shows several undertreated conditions, including no medication prescribed for depression, dementia, or vitamin/mineral deficiencies (resulting from weight loss). It is also noted that the aspirin may be causing adverse gastric effects and that side effects related to antibiotic use may be contributing to the decrease in appetite and food intake.

Patient S is started on a regular diet with fortified foods and high-calorie snacks, with the addition of a daily multivitamin. However, the physician advises the patient to decrease alcohol intake to one beer daily (preferably a low-alcohol type). To address the constipation, daily prune juice and milk of magnesia (30 cc as needed) are recommended. Omeprazole 20 mg taken 30 minutes before a meal is prescribed for the patient's continued dyspepsia. Finally, acetaminophen (1 g three times per day) is added to Patient S's regimen to treat his arthritic knee pain. If the patient experiences side effects of the oral acetaminophen, a topical nonsteroidal anti-inflammatory drug may be substituted. The patient is also instructed on physical therapy modalities to manage his pain, including heat, use of a brace, and massage. He continues physical, speech, and occupational therapy for therapeutic exercises, strengthening, endurance, gait training, and cognitive/memory training.

In addition, Patient S is referred to a urologist, psychiatrist, and social worker for continued care planning. It is important that the patient consider options for long-term care, assisted living, and financial assistance, as returning to living alone in his apartment will likely not be a possibility. He is instructed to return in one week for a follow-up appointment.

At Patient S's one-week follow-up appointment, the patient states that his right knee is still sore but slightly improved and his stomach discomfort is relieved, with improvement in constipation. The patient appears mildly confused but is able to answer questions appropriately. He does have multiple complaints regarding food, staff, and policies of the skilled nursing facility where he has been living. He feels he is making good progress with his therapy and is eager for discharge. The patient also expresses a hope that his catheter will be removed soon. He continues to decline assistance with smoking cessation.

At this visit, Patient S's blood pressure is 130/80 mm Hg, pulse 74 beats per minute, respirations 16 breaths per minute, weight 141 pounds, and BMI 21.4. The report from the urologist indicates the ongoing need for the Foley catheter due to obstructive uropathy. The patient has been scheduled for cystoscopy and ultrasound of the bladder and kidneys. Occupational and speech therapies are to be discontinued this week, but continued physical therapy is necessary for gait training, therapeutic exercises, mobility, and balance with a cane.

The psychiatrist reports an MMSE result of 19 and has diagnosed Patient S with depression and vascular dementia. She recommends computed tomography (CT) scan of the brain with contrast. The patient has been prescribed citalopram 20 mg/day, and the future consideration of cholinesterase inhibitors for dementia treatment is noted. His physician instructs Patient S to continue with the current treatment plan, including following up with psychiatry and urology as necessary.

Although Patient S's weight stabilizes, he never regains the weight loss of 18 pounds. The CT of his brain shows microvascular ischemic changes consistent with vascular dementia, possibly a result of the combined risk factors of alcohol and tobacco use, hyperlipidemia, and hypertension. The potential for self-neglect and inadequate medical care is high, and Patient S is not able to return to his apartment to live independently. The lack of family or caregiver is a contributing factor.

After many discussions and care meetings and the intervention of a social worker, the patient moves into an assisted living facility that is subsidized by the government. He continues to be treated by his urologist and psychiatrist. His appetite improves, but he never returns to his pre-illness status.