CHAPTER 126 Palliative Care for Patients with Gastrointestinal and Hepatic Disease
WHAT IS PALLIATIVE MEDICINE?
Palliative care is interdisciplinary care that aims to improve the quality of life of patients and their families facing the problems associated with life-threatening illness through preventing and relieving suffering by identifying, assessing, and treating pain and other problems, including physical, psychosocial, and spiritual ones.1 Although palliative care often is provided to patients with life-threatening illness that is not responsive to curative treatment,2 it can and should be offered concurrently with all other appropriate medical therapies including cure-oriented treatments.
Palliative medicine recognizes that dying is a normal life cycle event and seeks neither to unnecessarily hasten nor postpone death, but rather to focus care on patient-defined goals as death nears.2 Most patients want to die with comfort and dignity and are able to articulate some or all of the following goals3:
Quality care near the end of life for complex physical and psychological problems cannot be provided by a single clinician. Care ideally is provided by an interdisciplinary team that includes physicians, nurses, social workers, chaplains, and bereavement counselors. The interdisciplinary palliative care team works in concert with, and does not replace, the primary medical team. Thus, the ultimate goal of palliative care is to prevent and relieve suffering and to optimize quality of life for patients and their families, regardless of the stage of the disease or the need for curative or palliative therapies. The American Academy of Hospice and Palliative Medicine provides a list of palliative medicine and hospice physicians on their website (www.aahpm.org).
HOSPICE VERSUS PALLIATIVE CARE
Palliative medicine and hospice care share the same philosophy of care. Unlike palliative medicine, however, hospice care in the United States is also a financial reimbursement system for the terminally ill patients, largely defined by the Medicare Hospice Benefit (MHB). As such, hospice care has defined regulations and admission criteria. Under the MHB, patients are eligible for a specific set of services if the physician certifies that the patient has six months or less to live, if the disease follows its usual course, and if the goal of treatment is palliative rather than curative.4 MHB does not require patients to relinquish heroic life-prolonging measures, future hospitalizations, or participation in research. Prognosis is based on the attending physician’s clinical judgment regarding the normal course of the person’s illness; if the patient lives beyond the expected six months, the hospice care may be continued by recertifying the patient under MHB. Although hospice care can be provided in special residential facilities or in long-term care facilities, currently most hospice care in the United States is provided in the patient’s home.
In contrast to hospice care, there are no specific eligibility criteria for palliative care because there is no specially defined reimbursement mechanism. The palliative care movement in the United States has developed largely in acute care hospitals and, more recently, in long-term care facilities. Therefore, all hospice care is palliative care, but not all palliative care is hospice care (Table 126-1). To truly provide seamless care of patients who are dying, communities need both palliative care and hospice services. There are 65 Hospice and Palliative Medicine fellowship programs in the country, and board certification is available through the American Board of Medical Specialties for the subspecialty of hospice and palliative medicine.5
Adapted from World Health Organization, 2008.
EXPLORING THE GOALS OF CARE
Exploring patient-defined goals of care is the first step in determining the most appropriate therapeutic interventions for a specific disease or symptom. An organized approach to goal setting can help the clinician and patient achieve clearly articulated goals. Goal setting is best accomplished through meeting with the patient and family or surrogate decision-maker (Table 126-2). Before a goal-setting meeting, the clinician should review the disease course, response to prior treatments, and potential for further disease-modifying treatments and develop a realistic short- and long-term vision for the future clinical course, including a general sense of prognosis. With this in mind, the clinician can begin to review treatment options and help the patient decide which treatments are most likely to help meet his or her specific goals. All therapeutic options should be examined in light of the question, “Does the intervention match or assist with the patient’s treatment goals?”6 As the burden of decision-making increases near the end of life, it is important for physicians to understand their central role in helping patients make decisions. A model of shared decision-making, in which the physician provides guidance and recommendations, generally is preferred to a paternalistic approach, or, at the opposite extreme, to one in which options are presented with no guidance.7
* Laws governing surrogate decision-making vary from state to state.
Adapted from Weissman DE, Ambuel B. Establishing treatment goals, withdrawing treatments. In: Weissman DE, Ambuel B, Hallenback J, editors. Improving End-of-Life Care. 3rd ed. Milwaukee: Medical College of Wisconsin; 2000. p 101.
PROGNOSTICATION
Despite the great need for accurate prognoses, prognostication remains an elusive clinical art. Numerous empirical studies have revealed a consistent optimistic bias,8 with most physicians overestimating anticipated life span by a factor of three. Physicians’ prognostic radars are further skewed when they are more connected with the patient. Consequently, patients who are in great need of quality palliative care are referred too late to palliative care services and thus are deprived of access to good symptom management.
Given that prognostication is challenging, many physicians are uncomfortable with this task and often avoid providing realistic prognostic information, or they continue to offer futile treatment options that can convey false hope and unrealistic expectations to patients and families. When pressed by patients, physicians then typically overestimate survival. If the imminence of death is not discussed honestly, patients might be more likely to accept costly, burdensome, and futile treatments.9
Prognostication guidelines are well established for cancer.10,11 The single best prognostic variable in cancer is performance status.10,11 For example, patients with a Karnofsky Performance Status (KPS) of 40 (disabled; requires special care and assistance) live on average less than 50 days; and patients with a KPS of 20 live an average of only 10 to 20 days (Table 126-3).10 Put another way, patients who are spending more than 50% of the day resting or in bed generally have a prognosis of three months or less. Specific symptoms provide further information: symptoms with an independent predictive value for a poor prognosis are shortness of breath, anorexia, difficulty swallowing, and weight loss.10
% | LEVEL OF FUNCTIONAL CAPACITY |
---|---|
100 | Normal, no complaints, no evidence of disease |
90 | Able to carry on normal activity, minor symptoms or signs of disease |
80 | Normal activity with effort, some symptoms or signs of disease |
70 | Cares for self, unable to carry on normal activity or to do active work |
60 | Requires occasional assistance, but is able to care for most needs |
50 | Requires considerable assistance and frequent medical care |
40 | Disabled, requires special care and assistance |
30 | Severely disabled, hospitalization is indicated although death is not imminent |
20 | Hospitalization is necessary; patient is very sick; active supportive treatment is necessary |
10 | Moribund, fatal processes progressing rapidly |
0 | Dead |
From Karnofsky, DA, Burchenal, JH. The clinical evaluation of chemotherapeutic agents in cancer. In: MacLeod CM, editor. Evaluation of Chemotherapeutic Agents. New York: Columbia University Press; 1949. p 196.
Prognostic criteria for noncancer diagnoses have been published and are especially useful to help physicians know when to refer patients for hospice services.12 Specific to gastroenterology, for example, general criteria have been established for chronic liver disease (Table 126-4). Beyond guidelines, some clinicians have advocated a simple test to determine when hospice services are appropriate by asking, “Would I be surprised if this patient died in the next six months?”13,14
BUN, blood urea nitrogen; HBsAg, hepatitis B surface antigen; INR, international normalized ratio.
Adapted from Standards and Accreditation Committee. Medical Guidelines for Determining Prognosis in Selected Noncancer Diseases. 2nd ed. Arlington, Va: National Hospice Organization; 1996.
No matter what type of cancer or noncancer fatal illness a person has, a “common final clinical pathway” occurs in most patients.10 Signs and symptoms that predict a prognosis of hours to days are decreased or fluctuating levels of consciousness, a precipitous clinical decline, decreased oral intake, and inability to turn over in bed.11 Patients close to death typically exhibit periods of apnea, retained oropharyngeal secretions (the death rattle), fever, and cool or mottled extremities.11
Discussing prognosis with patients and families is a key skill in palliative care. Physicians are advised to start by asking patients if they previously have been given prognostic information, if they have a sense of how much time is left, and whether they would like to discuss prognosis. If a patient indicates that he or she wishes to discuss prognostic information, provide a broad estimate, a few days to a few weeks or a few weeks to a few months, rather than, “Mr. Jones, you have only three weeks to live.”4 Once the time frame is presented, important future goals can be determined by asking, “What do you want or need to do in the time that is left?” (e.g., important events, saying goodbye to loved ones). This allows the clinician to aim the information at the level of the patient and family.11
KEY PROGNOSTIC VARIABLES AND TOOLS IN LIVER DISEASE
MODEL FOR END-STAGE LIVER DISEASE SCORES
The Model for End-Stage Liver Disease (MELD) (see Chapter 95) is a numeric scale used to prioritize patients for liver transplantation.15–18 It is calculated by a formula using the serum bilirubin, international normalized ratio (INR), and the serum creatinine. The MELD has been validated for short-term and intermediate-term mortality in a heterogeneous group of patients with liver disease. Modifications of the MELD score using serum sodium values have been suggested; these might enhance its prognostic ability for patients with cirrhosis.