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Decision making in advanced disease is complex and challenging. Decisions are emotional and often have irreversible outcomes (e.g., death). For many, the desire to live longer is strong, but unrealistic, when faced with advanced illness, and goals must be realigned toward comfort and quality of life. Some medical interventions are invasive and detract from quality of life without lengthening life. Decision makers include professionals, patients, their families, and external parties (institutions, insurers, governments). These decision makers may have diverse goals, priorities, values, and cultural backgrounds, affecting their beliefs about care near the end of life. Prognostication and communication are critical to good decision making. In advanced disease, preferences for decision-making style are individual, often unstated, and change over the illness course. Advance directives involve decisions about theoretical future events. Near the end of life, many people lose capacity to make decisions and this responsibility falls to their families. This is often at a time of great stress and influenced by emotions, grieving, and caregiving burdens. Sometimes a time-limited trial of therapy is used to facilitate decision making in these difficult situations.

Why is Decision Making Needed in Advanced Disease?

Patients with advanced disease are faced with complex treatment options (disease-focused or supportive therapy, hospice, clinical trials) and choices about commencement, continuation, or withdrawal of interventions such as artificial hydration and nutrition, blood transfusion, cardiopulmonary resuscitation, circulatory support, dialysis, and invasive ventilation.

Studies of quality of death in America have found that death frequently occurs in hospitals and is accompanied by the use of highly technical interventions (e.g., invasive ventilation, cardiopulmonary resuscitation) and significant pain and distress. Invasive medical interventions close to death are not associated with better outcomes and are sometimes against the expressed wishes of patients. Trials of interventions to improve quality of care at the end of life (the SUPPORT study) have so far been unsuccessful.

When Are Decisions Needed?

Decision making in advanced disease requires recognition (usually by the clinician) that a decision needs to be made. Even not making a decision may be a decision itself. Timing of the decision requires recognition and communication of the following: incurable disease, limited prognosis, potential future-course and alternative-management options. Decision making may be impaired by the assumption that only one option is available (e.g., active treatment is pursued due to failure to recognize supportive care as a valid treatment option).

In many advanced illnesses, especially neurological illnesses, ability to communicate is lost as disease progresses. Decision-making capacity may also be lost due to an acute crisis requiring intubation or sedation or to delirium, which commonly occurs close to death. Ideally, patients with advanced illness are able to express their treatment preferences, write advance directives, and appoint a surrogate decision maker (medical power of attorney) before they lose capacity.

Prognostication

Decision making in advanced disease relies on prediction of prognosis: the expected duration and quality of life, and likely future course of the disease. Advanced cancer is often characterized by a short decline in function toward death. Advanced nonmalignant diseases (chronic organ failure) have a more gradual decline worsened by recurrent exacerbations. Death is the result of an acute exacerbation that fails to respond to treatment, thus timing is less predictable. Chronic frailty or dementia follows a slow, drawn-out decline. Instruments are available to predict prognosis based on type and stage of disease, symptoms, physical function (performance status), and test results. These instruments predict chances of being alive at a certain point or give a median survival for a similar group of patients; they cannot predict how long an individual will live. Physician predictions of individual prognosis are often inaccurate and tend to be overly optimistic. Physicians are reluctant both to make prognostic estimates and to communicate them to patients. Patients' estimates of their own prognosis are also often inaccurate. These failures of prognostication and communication hinder decision making.

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