End-of-Life Care in Respiratory Failure




Introduction


Patients with acute, chronic, and acute-on-chronic respiratory failure often suffer from symptoms such as pain and dyspnea and have a high expected mortality rate. These patients may be aggressively treated when they, their families, and their physicians believe that doing so is reasonable and consistent with the patient’s treatment preferences. Alternatively, therapies such as mechanical ventilation, which can often reverse respiratory failure in patients with acute decompensation, may be forgone for patients who refuse such treatments and for those whom a trial of intensive treatment fails to achieve the patient’s medical goals. When clinically appropriate, the withholding and withdrawal of life-sustaining therapy is supported by ethical and legal principles. These principles, along with the process of medical decision making and the desirable components of end-of-life care, are discussed in detail in this chapter.




Predicting the Outcome of Respiratory Failure


The prevalence of diseases that cause respiratory failure, coupled with the morbidity and mortality they cause, has prompted clinicians and investigators alike to seek prognostic information about patients with these disorders. Some of this prognostic information has been derived from single- or multi-institutional studies of specific conditions such as chronic obstructive pulmonary disease (COPD), Pneumocystis jirovecii pneumonia in patients with the acquired immunodeficiency syndrome (AIDS), and acute respiratory distress syndrome (ARDS). Other information has come from studies of patients in certain age groups, such as the elderly, or from studies of interventions, such as mechanical ventilation. These studies in turn have been used to develop tools to predict not only patient outcome but also the need for admission to the intensive care unit (ICU) for diseases such as pneumonia.


Additional information has been obtained from the use of prognostic scoring systems based largely on physiologic variables such as arterial P co 2 and P o 2 recorded on hospital admission or at other times. Although many of these systems were developed specifically for patients in ICUs, where physiologic variables are routinely measured, they also have been applied to patients elsewhere. Perhaps the best known prognostic scoring system is the Acute Physiology and Chronic Health Evaluation (APACHE), which has gone through four iterations. Similar to APACHE, another prognostic system developed for the Study to Understand Prognosis and Preferences for Outcomes and Risks of Treatment (SUPPORT) was based on patient diagnosis, age, number of days in the hospital before study entry, presence of cancer, neurologic function, and 11 physiologic variables recorded on day 3 of study entry.


Prognosis based on the experience of individual clinicians or institutions is necessarily limited; despite wide use, such prognostication has never been subjected to rigorous evaluation. Although prognostication based on broader investigations of specific diseases should be more accurate, the changing outcome from P. jirovecii pneumonia, ARDS, and other conditions over time limits the use of these investigations in predicting outcome unless they are frequently updated. Furthermore, the tools based on these studies that may be used to determine the need for intensive care for pneumonia and other diseases have limited predictive value, presumably in part because the outcome from these conditions has changed over time.


Physiologically based prognostic scoring systems have been shown to be as accurate—or inaccurate—as clinical assessment by physicians and nurses. They have demonstrated good calibration in that the overall hospital mortality predicted by the systems is comparable with that actually observed in research studies. Nevertheless, the systems have not discriminated well between individual survivors and nonsurvivors. For example, recommended prediction criteria were not effective in identifying a SUPPORT population with a survival prognosis of 6 months or less, limiting their use in determining which patients might generally meet hospice eligibility requirements. Furthermore, the system is poor at predicting imminent death; when the SUPPORT prognostic system was used to derive the likelihood of survival for patients on the day before their actual death, the median predicted likelihood of survival for 2 months was 17% and, when derived 1 week before actual death, the predicted likelihood was 51%.


Overall, prognostic scoring systems have contributed greatly to our understanding of the general outcomes of patients with respiratory failure and other conditions. Furthermore, the calibration and discriminatory power of the systems may improve as more studies of the systems are performed and more patients are entered into their databases. Yet, at present, the systems are imperfect in predicting outcome in an individual patient. For the foreseeable future, therefore, the use of prognostic scoring systems should continue to be adjunctive in that they provide information to help in medical decision making but cannot be used by themselves to decide who is destined to die despite intensive care.




Treatment Goals at the End of Life


The limitations of prognostication are unfortunate because patients’ and their families’ predictions of prognosis largely determine their treatment preferences, just as physicians often base their recommendations to patients and families on their own prognostic estimates. For example, many patients with acute respiratory failure due to potentially reversible causes, as well as their families, generally prefer goals focused on rescue and life prolongation until death appears highly likely. In contrast, patients with end-stage chronic lung diseases such as COPD and lung cancer often prefer care that is focused on maintaining comfort rather than on extending their lives. These preferences appear to be related to patients’ perceptions of how far advanced their underlying conditions are. For example, hospitalized patients with lung cancer who thought they were going to live at least 6 months were more likely to favor life-sustaining treatment over comfort care than patients who thought they had at least a 10% chance of dying within the next 6 months. Of course, the treatment goals of life prolongation and maintenance of comfort need not be mutually exclusive. Life support and symptom relief are often sought simultaneously.


The term end-of-life care is meant to encompass two processes. One, the withholding and withdrawal of life support represents the tapering of life-sustaining interventions such as pulmonary rehabilitation in the outpatient setting and mechanical ventilation in the ICU. The other, the administration of palliative treatment, applies, among other things, to improving patient comfort by giving sedatives and analgesics. Combining these two processes signifies that end-of-life care involves more than removing something—in this case, life-saving treatments—from patients. It also means giving something to them: proper medical decision making; thoughtful communication; an appreciation of their needs and those of their families, physicians, and other caregivers; the use of an appropriate setting for death; and the management of pain, dyspnea, and other symptoms. This comprehensive and compassionate approach is what is meant by the expression “intensive caring at the end of life.”




Where and How Patients Die


In less developed countries, most patients with respiratory failure who die do so at home largely because they have limited access to hospitals and other institutional settings. In the United States and other developed nations, however, patients most often die outside the home. For example, of the large cohort of hospitalized patients in SUPPORT, 47% died within 6 months of study enrollment and 55% of these died during the enrollment hospitalization. Of the patients who survived the enrollment hospitalization, 46% died during hospitalization later that year and only a minority died in a nursing home or hospice, let alone at home. Similarly, in one investigation of all the deaths recorded in six states during 1999, 38% of patients died in hospitals and 22% died following ICU admission. Using these data to project national estimates, the investigators concluded that 540,000—fully one fifth—of all patients who die in the United States do so in ICUs each year.


Many factors account for the high prevalence of in-hospital and in-ICU deaths in the United States and, presumably, other developed countries. Among them are the availability of these facilities and of the physicians who admit patients to them and the fact that fewer elderly persons still reside with their families. In the United States, patients must be determined to have less than 6 months to live to qualify for hospice placement, but it is difficult to predict with accuracy which patients have such a limited life expectancy. Most patients want to live as long as possible unless life is a burden to them and their families, and many physicians will try to forestall death unless there is a high degree of certainty that patients will be left with unacceptably burdensome functional impairment.


When ICUs were first developed during the 1950s and 1960s in the United States and Europe, patients who died in them did so despite full support, including attempted cardiopulmonary resuscitation (CPR). The wishes of patients and their surrogates regarding such support rarely were solicited, and do-not-attempt-resuscitation (DNAR) orders were rarely written for the patients because most hospitals felt obligated to perform CPR on everyone. Indeed, a host of potentially restorative treatments were automatically provided with little concern about their effectiveness or desirability. This approach was based on the belief, held by both health professionals and the public, that technologies should be used to preserve life whenever possible regardless of the human and economic costs.


In recent years, however, the “technologic imperative” has been challenged, just as the expenses of the ICU have been scrutinized. CPR has been shown often to be ineffective in certain hospitalized patients. Patients have been found not to prefer attempted restorative therapy in all instances, and courts in the United States have declared that these patients have a “right to die.” The ethical, legal, and economic consensus that has resulted from these developments has been reflected in a series of statements from professional societies on the appropriateness of forgoing life-sustaining therapies at the end of life. As a result, although hospitalized patients once died despite attempted restorative treatment, today they are more likely to die during the withholding and withdrawal of life support and the administration of palliative care, especially in the ICU.




Ethical and Legal Justification for End-of-Life Care


Justification for Withholding and Withdrawing Life-Sustaining Therapy


The withholding and withdrawal of life support is justified by four ethical principles ( Table 104-1 ). The first principle is beneficence : the physicians’ obligation to do good for patients. Relieving pain and suffering, rather than sustaining life at all costs, may be beneficent in certain situations. The second principle is nonmaleficence : the physicians’ obligation to avoid harm. Life-sustaining interventions may be painful and unlikely to sustain life in a way judged meaningful by the patient, and foregoing such interventions may reduce harm. The third principle is autonomy : respect for the patients’ right of self-determination. Patient autonomy is reinforced when patients are allowed to refuse unwanted life-sustaining therapies. The fourth principle is justice : the fair allocation of medical resources. Justice may be served if life support is withdrawn from one patient with a poor prognosis to help another patient with a better prognosis, such as during a mass casualty event or in an influenza pandemic.



Table 104-1

Ethical (Worldwide) and Legal (United States) Principles for Withholding and Withdrawing Life-Sustaining Therapy





































ETHICAL PRINCIPLES
Beneficence
Nonmaleficence
Autonomy
Justice
LEGAL PRINCIPLES: RIGHT OF INFORMED CONSENT AND REFUSAL
Exercised by patients with decision-making capacity
Exercised by family members for incapacitated patients
As authorized under proxy directives
Using a substituted-judgment standard (facilitated by instructional directives)
Using a best-interests standard
Exercised by a court-appointed conservator
Using a substituted-judgment standard (facilitated by instructional directives)
Using a best-interests standard
Exercised by physicians, often after ethics committee review
Using a substituted-judgment standard (facilitated by instructional directives) (legal justification in a few states)
Using a best-interests standard (no legal justification)

From Beauchamp TL, Childress JF, editors: Principles of biomedical ethics, ed 4. Oxford, 1994, Oxford University Press; and Luce JM, Alpers A: End-of-life care: what do the American courts say? Crit Care Med 29:N40–N45, 2001.


In the United States, the withholding and withdrawal of life-sustaining therapies is justified legally by the principles of informed consent and refusal, which have strong roots in common law. The right of adults who are capable of making medical decisions either to consent to or to refuse treatment was first established in Schloendorff v. Society of New York Hospitals in 1914. In this case, the New York Court of Appeals declared: “Every being of adult years and sound mind has the right to determine what should be done with his own body; and a surgeon who performs an operation without his patient’s consent commits an assault, for which he is liable in damages, except in cases of emergency when the patient is unconscious or when it is necessary to operate before consent can be obtained.”


The right of adults with decision-making capacity to refuse treatment was advanced in cases such as Bartling v. Superior Court and Bouvia v. Superior Court in California. In the first of these cases, the Court of Appeals allowed a man with advanced COPD to have a mechanical ventilator removed against the wishes of his physicians and of the hospital. In the second, the appeals court ordered a hospital to stop force-feeding a quadriplegic woman against her will even though she might die in the process. Most states have dealt with similar cases, and the principle that adults with capacity can refuse unwanted therapies is now widely accepted.


The U.S. Congress supported the importance of respect for patient autonomy by passing the Patient Self-Determination Act. This statute mandates that patients admitted to medical facilities be asked whether they have advance directives and, if they do not already have them, that they be assisted in drawing up directives. Advance directives are of two types: instructional directives that state what patients want done in a given situation (e.g., living wills) and proxy directives that appoint surrogates to make decisions for them in these situations (e.g., the durable power of attorney for health care). Although there are well-documented shortcomings, advance directives have the potential for extending patient autonomy beyond the point of incapacity, even though this potential has not been fully realized.


Because of their illness and sedation, many critically ill patients cannot partake in the medical decision-making process. In this circumstance, family members and other surrogates, if available, may consent to or refuse treatment for them. Parents have a long-standing right, indeed an obligation, to speak for their dependent children. The legal right of surrogates to act for incapacitated adult patients was established in In re Quinlan in which the Supreme Court of New Jersey allowed the parents of a vegetative patient to refuse mechanical ventilation for their daughter through the mechanism of surrogate decision making. Through this mechanism, family members also were allowed to make life-determining decisions for their adult relative in Barber v. Superior Court in California. In this case, the court determined that not only mechanical ventilation but also nutrition and hydration—indeed, any therapy that was not clearly benefiting the patient—could be forgone.


The U.S. Supreme Court dealt with the issue of surrogate decision making in the case of Cruzan v. Director, Missouri Department of Health . In this case, a family argued that it was unconstitutional for a chronic care facility in Missouri to deny their request to remove a feeding tube from their vegetative adult daughter. The facility argued that the daughter had not specified her wishes not to be fed artificially in advance of incapacity. In its Cruzan decision, the Supreme Court allowed Missouri and other states to require “clear and convincing evidence” of patients’ prior wishes before care was forgone for them. Nevertheless, it did not demand this requirement of other states, and it accepted the argument that the right of adult patients with decision-making capacity to refuse any and all therapies was protected under the Constitution.


Substituted judgment, through which surrogates make inferences about what treatment decisions patients would make if they were able to make decisions for themselves, is the highest standard under which surrogates may make medical decisions for incapacitated patients. Nevertheless, surrogates also may consider the patients’ best interests. One delineation of a best-interests standard is that of the New Jersey Supreme Court relative to In re Conroy . In this case, a nephew asked that a feeding tube be withdrawn from his elderly aunt, who had not declared her wishes before becoming demented, on the grounds that forgoing nutrition and hydration was in her best interest. The court would allow the best-interests standard in this case only because the burdens of continuing the patient’s life outweighed the benefits and because the recurring, unavoidable pain of life with treatment was such that administering therapies such as nutrition and hydration was inhumane. These requirements were imposed because the court considered the best-interest standard less compelling than the substituted-judgment standard.


Another legal perspective on the standards of substituted judgment and best interests came in the case of Wendland v. Wendland . This case involved a middle-aged man who was conscious but hemiplegic, uncommunicative, and unable to feed himself after a motor vehicle accident. After his feeding tube repeatedly became dislodged, his wife, who was his conservator, refused to authorize its reinsertion. In support of her decision, she cited her husband’s statements before his accident that he would not want to live in a severely debilitated condition. At this point, his mother went to court to block the plan not to reinsert the feeding tube, and it was reinserted. Mr. Wendland subsequently died, but the California Supreme Court deliberated on the issue of whether a conservator could withhold or withdraw life support from a patient who was conscious but incapable of articulating his current wishes. The Court ultimately ruled that feedings could be discontinued only if there was clear and convincing evidence that “the patient wished to refuse life-sustaining treatment or that to withhold such treatment would have been in his best interest,” which was not thought to be true of Mr. Wendland. The decision in his case suggests that the courts are unlikely to allow surrogates to limit treatment in patients who are neither terminally ill nor permanently unconscious unless the patients have specified what they would want done in such a situation.


Legal guidelines are less clear when incapacitated patients lack family members or other surrogates. Some states (e.g., Hawaii, Connecticut) allow physicians to make decisions for such patients on the basis of wishes expressed to the physicians when the patients had decision-making capacity. However, no state explicitly allows physicians to make decisions on the basis of a best-interests standard. Be that as it may, as shown in a study from seven U.S. medical centers, some physicians do make decisions to withhold or withdraw life-sustaining therapy from incapacitated patients on the basis of best interests, usually after consultation with their colleagues or with a hospital ethics committee. Other physicians ask the probate court to appoint conservators or other advocates for the patients, presumably to ensure a fair, transparent, and deliberate process of decision making for these vulnerable patients.


Before leaving the subject of justification for withholding and withdrawing life support, it is important to mention that decisions regarding this process are different for brain-dead patients than they are in patients who have lesser degrees of neurologic impairment. In the United States, death is defined as the total and irreversible loss of either cardiopulmonary function or the function of the entire brain. The determination of death by whole-brain criteria requires the demonstration of coma, indicating the loss of cerebral hemispheric function, and the documentation of absent corneal, oculovestibular, and ventilatory reflexes, indicating loss of function of the brain stem. Absence of ventilatory reflexes is demonstrated by an abnormal apnea test in which intubated, nonparalyzed patients removed from mechanical ventilation and given oxygen fail to initiate respiratory muscle efforts despite an increase of their arterial P co 2 to at least 60 mm Hg.


Life-sustaining therapy usually can be forgone without a formal declaration of brain death. Conversely, some surrogates may insist that therapy be continued until patients die, in which case determining death by whole-brain criteria may be desirable. That said, the only patients in whom brain death must be determined are those who seem to be dead and whose organs will be transplanted after life support is withheld or withdrawn. Regarding the latter patients, one might argue that withdrawing life support from someone who is dead is an oxymoron. Because of this argument, and because brain-dead patients usually receive mechanical ventilation and other interventions only until their organs can be harvested, “life support” for them can be likened to “organ support.”


The ethical and legal justification for removing therapies from brain-dead patients is not just that the therapies generally are unwanted by patients and surrogates in this situation but also that the patients are dead and cannot benefit from them. Inasmuch as the patients are dead, physicians have no obligation to treat them, and they do not need to obtain consent from surrogates before withholding or withdrawing treatment. Nevertheless, consent is required for organ retrieval and transplantation. Furthermore, the families of brain-dead patients frequently do not understand the concept of brain death and consider the patients to be alive because their chests rise and fall as the ventilator cycles and a tracing of their cardiac rhythms is displayed on the bedside monitor. Families also may reject the concept of brain death for religious reasons.


Motivated by consideration for such families and by a desire to gain their consent for organ donation, many physicians are appropriately nonconfrontational in addressing the issue of brain death. They take time to explain what death means in a biologic and legal sense, how brain death is determined, and how valuable transplantation can be for organ recipients, as well as for the families of patients who serve as organ donors and even for the patients themselves. This approach is generally helpful to families, regardless of whether they ultimately approve transplantation. It is also useful in maintaining emotional equilibrium during a difficult time for all parties in the ICU.


Medical Futility


Although the ethical principle of autonomy and the legal principles of informed consent and refusal are the most compelling justifications for withholding and withdrawing life support, the concept of futility has also been used as a justification. This concept is invoked on the relatively rare occasions when patients or their surrogates request interventions (particularly those that are costly, scarce, or both) that physicians object to because they believe the patients cannot benefit from them. Some treatments, such as brain transplantation for brain-dead patients, are physiologically futile in that they cannot be accomplished. Other treatments, such as the use of mechanical ventilation in a permanently comatose or brain-dead patient, can succeed physiologically, but some physicians may consider them inappropriate because they cannot result in an outcome that the clinician judges to be valuable.


One group of investigators sought to define medical futility as an intervention that has been useless in the last 100 cases or that “merely preserves unconsciousness and cannot end dependence on intensive medical care.” In a similar vein, the American Thoracic Society argued that “a life-sustaining intervention may be withheld or withdrawn from a patient without the consent of the patient or surrogate if the intervention is judged to be futile. A life-sustaining intervention is futile if reasoning and experience indicate that the intervention would be highly unlikely to result in a meaningful survival for that patient. Here, meaningful survival specifically refers to a quality or duration of survival that would have value to that patient as an individual. Survival in a state with permanent lack of consciousness (i.e., completely lacking cognitive and sentient capacity) may be generally regarded as having no value for such a patient.”


Despite what has been called the “futility movement,” a broad concept of futility has never achieved consensus within the medical community in the United States or elsewhere, and the American Thoracic Society position has not gained broad support. A contrary position has been advanced by the Society of Critical Care Medicine, which holds that “treatments should be defined as futile only when they will not accomplish their intended goal. Treatments that are extremely unlikely to be beneficial, are extremely costly, or are of uncertain benefit may be considered inappropriate and hence inadvisable but should not be labeled futile. Futile treatments constitute a small fraction of medical care. Thus, employing the concept of futile care in medical decision making will not primarily contribute to a reduction in resource use.”


In some ways, the development of prognostic scoring systems can be seen as an attempt to predict which patients cannot benefit from therapies, especially those that are expensive, and thereby provide a rationale for denying such therapies to them. Yet most patients and families are quite willing to forgo such therapies even when physicians are not, as indicated by SUPPORT. Furthermore, a study of the theoretical implementation of a strict futility guideline for more than 4000 SUPPORT patients demonstrated that only minimal cost savings could be realized by not treating patients who were predicted to have a 1% or less 2-month survival. Nearly 75% of the savings in hospital days would have resulted from stopping treatment for 12 patients, one half of whom were younger than 51 years of age and 1 of whom lived 10 months when treatment was continued.


The emphasis on cost savings in the aforementioned study speaks to the fact that arguments about futility often have economic overtones. At one time, it appeared that American society could transition from a “rule of rescue,” in which large sums of money were spent on therapies providing only marginal benefit, to a “rule of reason,” in which this money could be used for primary and preventive care. Arguments based on futility seem to provide a rationale for forgoing treatment on the grounds that it is not worthwhile, apart from the matter of cost. Yet these arguments conceal value-laden assumptions, and they obscure the underlying issue of rationing.


Thus, the greatest problem with medical futility is not how it is defined but who defines it. In this regard, the debate over futility pits physicians, who believe that their training and experience enable them to know what therapies are truly useful and cost-effective, against patients and families, who may feel entitled to such therapies regardless of whether they pay for them directly. Physicians certainly are able to identify physiologic futility, and they are not legally or ethically required to perform procedures they consider nonbeneficial and below professional standards. Benefit, however, seems often to be in the eyes of the beholder: although physicians may regard mere prolongation of life as undesirable in certain circumstances, patients and families may consider it valuable. When these persons want treatments that physicians consider futile in more than a physiologic sense, which party should decide?


The American Medical Association Council on Ethical and Judicial Affairs has stated that, “Since definitions of futile care are value laden, universal consensus on futile care is unlikely to be achieved.” At the same time, the Council has recommended a process-based approach to futility determinations whereby patients or families who insisted on therapies that physicians considered futile would be required to undergo a dispute resolution process. Central to this process would be mediation by a hospital ethics committee. If resolution was not reached through mediation, the patients would be transferred to another institution or care would be terminated if transfer were impossible. So-called futility policies based on this model have been developed in Houston, Texas, and other cities.


Based on the Houston experience, the State of Texas adopted a law providing an extrajudicial due process mechanism for resolving medical futility disputes. A survey of Texas hospitals’ experience with this law indicates that a minority of the hospitals had used the due process mechanism and that life-sustaining treatment was discontinued against patients’ or surrogates’ wishes in only a small number of cases. Furthermore, the constitutionality of the Texas statute has not been determined at the appellate or U.S. Supreme Court level. As a result, the implications of the Texas statute for that state and for the rest of the United States are unclear.


To date, legal cases such as In re Helen Wanglie and In the Matter of Baby K suggest that judges are unwilling to allow physicians to withhold or withdraw support from patients when the physicians ask to do so and the patients or families object. In the first of these cases, a court in Minneapolis refused to replace a husband who was seeking continued life support for his wife, life support which her physicians considered nonbeneficial, with another conservator who might allow support to be forgone. In the second, a Virginia court required that physicians repeatedly resuscitate an anencephalic infant at the request of its mother but against their own wishes, reasoning that to do otherwise would violate the Emergency Medical Treatment and Active Labor Act.


In contrast, the case of Gilgunn v. Massachusetts General Hospital indicates that physicians are likely to obtain legal results more to their liking when they refuse to provide treatment they consider futile and defend their decisions in court as consistent with professional standards. In this case, a jury in Boston exonerated physicians at Massachusetts General Hospital for removing a patient from life support and writing a DNAR order for her over the objections of her daughter. The patient’s husband and other children did not protest the physicians’ actions, and the jury apparently believed that the physicians acted within the standard of care. This case does not set legal precedent because a written judgment was not rendered. Nevertheless, the jury decision in Gilgunn suggests some public support for the concept of futility.


How the debate over futility will be resolved is uncertain. Because patient autonomy is so widely accepted in the United States, because national health insurance does not exist there, and because patients and families are suspicious of managed care organizations, it seems unlikely that American physicians will soon be granted a mandate to restrict services on the basis of futility. This is not the case in other countries, however, where resources are limited, national health insurance exists, and physicians implicitly and explicitly are allowed to ration care. Whether physicians will continue to exercise this and other prerogatives if American-style patient autonomy becomes more prevalent in their countries remains to be seen.


Justification for Administering Palliative Care


The U.S. Supreme Court has provided ethical and legal justification for the administration of palliative care at the end of life, in the cases of Washington v. Glucksberg and Vacco v. Quill . These cases dealt with the constitutionality of laws prohibiting physician-assisted suicide in the states of Washington and New York. In Glucksberg , the Court decided that terminally ill patients do not have a liberty interest in committing suicide or in receiving a physician’s assistance in committing suicide because of the long tradition of prohibiting suicide in the United States and because of the states’ legitimate interest in continuing to make suicide illegal. In Vacco , it distinguished between assisted suicide and withholding and withdrawal of life support. “Everyone, regardless of physical condition, is entitled, if competent, to refuse lifesaving medical treatment; no one is permitted to assist a suicide,” the Court wrote. “When a patient refuses life-sustaining medical treatment, he dies from an underlying fatal disease or pathology; but if a patient ingests lethal medicine prescribed by a physician, he is killed by that medication.”


In Glucksberg and Vacco , five justices reasoned that Washington and New York could prohibit assisted suicide because these states had no barriers that prevented patients from receiving medications to relieve pain and suffering. However, as Justice Breyer wrote, “Were state laws to prevent the provision of palliative care, including the administration of drugs as needed to avoid pain at the end of life, an action against such law might be called for by the Supreme Court.” Through this and other statements, a majority of the justices suggested that being free of pain while dying was a liberty interest protected under the Constitution.


The Supreme Court distinguished assisted suicide from palliative care in Glucksberg and Vacco by accepting the ethical principle of double effect. Under this rule, acts such as giving sedatives and analgesics that lead to morally good effects, such as the relief of suffering, are permissible even if they produce morally bad effects, such as the hastening of death, provided that only the good effect is intended. The morally bad effect may be foreseen in that physicians are aware of its possibility and even its likelihood, but they may not wish it. The bad effect also may not be a means to the good effect, and the good effect must outweigh the bad one; that is, risking death is reasonable in palliating a terminally ill patient only if there are no less risky ways of relieving suffering.


The Supreme Court’s approval of palliative care included sanctioning the practice of terminal sedation , in which patients are rendered unconscious while life-sustaining therapies, including nutrition and hydration, are withdrawn. Under Vacco , a state may allow terminal sedation if it is “based on informed consent and the double effect. Just as a state may prohibit assisted suicide while permitting patients to refuse unwanted lifesaving treatment, it may permit palliative care related to that refusal, which may have the foreseen but unintended ‘double effect’ of hastening the patient’s death.”


Some have argued that the rule of double effect has many shortcomings as an ethical guideline, in particular because it overlooks the complexity of human intention. Such complexity was demonstrated in a study of the administration of sedatives and analgesics during the withholding and withdrawal of life support in two ICUs. In this study, physicians indicated that they ordered these agents primarily to decrease pain, anxiety, and dyspnea—but also to hasten death—in 39% of critically ill patients. In another investigation, 16% of a sample of ICU nurses reported that they had engaged in assisted suicide or euthanasia while trying to relieve patient suffering, often without physicians’ knowledge.


Just as some physicians and nurses have mixed motives in caring for dying patients, so do some family members want to ease suffering and hasten death simultaneously in their relatives. That such motivation is widespread presumably accounts for the fact that few physicians who are suspected of participating in assisted suicide or euthanasia have been punished through the criminal justice system in the United States. In general, physicians and other caregivers are unlikely to be prosecuted or even criticized if they act compassionately in administering sedatives and analgesics to treat distressing symptoms in dying patients and do so with informed consent.


In Glucksberg and Vacco , the Supreme Court did not judge the laws prohibiting physician-assisted suicide in Washington and New York to be unconstitutional. Nevertheless, it also did not prevent other states from permitting physician-assisted suicide if they chose to do so. Physician-assisted suicide was legalized in Oregon in 1997 under that state’s Death with Dignity Act. Experience over the subsequent 2 years indicated that few patients requested lethal medications, that physicians granted few requests, and that palliative interventions led some, but not all, patients to change their minds about assisted suicide. By and large, the decision to request and use a prescription for lethal medication stemmed from patients’ concern about loss of autonomy or control of bodily functions, not from fear of intractable pain or financial loss.


Physician-assisted suicide (in which physicians prescribe potentially lethal medications that patients themselves can take) and euthanasia (in which physicians actually administer the medications) are practiced in several European countries. Although none of these countries has legalized the practices, physicians in the Netherlands have not been punished for performing them since 1991, when a national study revealed that assisted suicide and euthanasia were being performed. Instead, Dutch physicians are required to report all cases in which they administered or supplied drugs with the explicit intent of hastening death. Patient requests for assisted suicide or euthanasia rose from 8900 in 1990 to 9700 in 1995 and remained stable at 9700 in 2003 according to one Dutch study. Assisted suicide was listed as the cause of death on only 0.2% of all death certificates in the Netherlands during the same years. In 1990, 64% of Dutch physicians thought that patients have a right to decide about their own life or death; the percentage of physicians was the same in 1995 but fell to 56% in 2001. These data suggest that, in the Netherlands as in Oregon, the demand for assisted suicide has not increased; in fact, over time, Dutch physicians appear to have grown more reluctant in their attitude toward this practice. How common assisted suicide will become in other European countries and how their laws will deal with these practices are unclear.




Medical Decision Making at the End of Life


Two Models of the Physician-Patient Relationship


Medical decisions may be made by physicians, patients, their families, or other surrogates alone or in combination. How decisions are actually made depends in large part on the model of the physician-patient relationship that is used.


Perhaps the oldest model is paternalistic ; this model has also been called parental or priestly. According to it, physicians act as guardians in defining what their patients’ interests are and then serving these interests as they see fit, with little or no input from the patients themselves. With pediatric patients, the families’ input similarly might not be sought or might be disregarded. The paternalistic model overlooks the strong social norm of respect for patient autonomy and the reality that in pluralistic societies it is unlikely that physicians can reliably discern what treatments most advance the interests of their diverse patients. The paternalistic model once dominated medical decision making at the end of life in the United States. In fact, the early cases such as Bartling, Bouvia, and Quinlan were brought because physicians and hospitals were unwilling to let patients or surrogates refuse therapy. It is ironic—and perhaps a cautionary tale about the limits of medical paternalism—that some physicians today demand that patients and families forgo treatment that other physicians once insisted they accept.


In another model, the deliberative or shared model, physicians and patients/surrogates collaborate to help patients define their health-related values, discuss treatment options, and together decide which alternative is best. This process is more than the mere passing of information: It is a moral deliberation, based on a mutual understanding of the medical facts and the patient’s values. The shared model of medical decision making is best suited for situations in which physicians, patients, and families have adequate time to deliberate, when reasonable treatment options exist, and when the best course of action may vary according to patients’ values and preferences. Evidence from audiorecording ICU family conferences suggests that the process of shared decision making about life support for incapacitated, critically ill patients is often suboptimal. For example, clinicians frequently failed to explain principles of surrogate decision making, elicit patients’ values and preferences, and discuss reasonable treatment options, including a purely palliative approach to care.


Medical decision making and the attitudes that underlie it vary from country to country. For example, although the shared model is gaining popularity in France, the paternalistic model is still sometimes employed at the end of life in ICUs there. Physicians are granted legal decision-making prerogatives in these ICUs that are not permitted for their American counterparts. Furthermore, French families have had no legal right to make decisions for patients who cannot make decisions for themselves. Variations in attitudes also exist within a given country depending on its ethnic and cultural composition. For example, in one study in the United States, Korean Americans and Mexican Americans were significantly less likely than European Americans and African Americans to believe that a patient should be told the diagnosis of metastatic cancer or that the patient should make the decision about the use of life-sustaining therapy. In another study, African Americans were more likely than European Americans to want to be kept alive on life support. Interviews of these African Americans subjects documented a deep distrust of the health care system and a fear that access to health care was based on one’s ability to pay.


Importance of Physician, Patient, and Family Communication


Of course, American families would not need to be so involved in medical decision making in the ICU setting if physicians facilitated such decision making when the patients’ diseases were less advanced and they could speak for themselves. Yet SUPPORT and other studies have shown that physicians and patients rarely discuss end-of-life issues in advance of the patients’ deterioration, even when patients reside in nursing homes. A study of patients with severe COPD enrolled in pulmonary rehabilitation revealed that almost all had health concerns, the most common of which was fear of increasing dyspnea. Although many of the patients had concerns about being intubated, only a minority had completed an advance directive describing their choices. Furthermore, although the patients generally wanted discussions with their physicians, only 19% had such discussions, only 15% had discussed life support, and only 14% thought that their physicians understood their end-of-life wishes.


Why patients with chronic and terminal diseases do not discuss end-of-life care with their physicians has been the subject of several investigations. In the study of patients with COPD enrolled in pulmonary rehabilitation, those patients who had not had discussions gave the most important reasons as their own procrastination and the fact that their physicians had not brought up the topic. When these patients participated in an end-of-life educational intervention as part of their rehabilitation, they were more likely to pursue such discussions with their physicians and to complete durable powers of attorney for health care.


In another study of patients with advanced AIDS, structured interviews of the patients and their physicians were used to identify barriers to communication. Patients who had not had discussions with their physicians about end-of-life care most frequently agreed that, “I don’t like talking about getting very sick” and “I would rather concentrate on staying alive than talking about death.” Physicians who did not initiate discussions most often agreed that, “There is too little time during our appointments to discuss everything we should” and “I worry that discussing end-of-life with [patient name] will take away his or her hope.” Many physicians in this study acknowledged that they felt uncomfortable discussing end-of-life issues, suggesting that their own discomfort was as important as the lack of time for discussions in inhibiting communication.


Limited communication between physicians and patients was also reported in SUPPORT. Furthermore, SUPPORT revealed that communication was frequently inadequate between physicians and the families of critically ill patients. This finding was corroborated by a study from an ICU in France in which half the families of critically ill patients reported the same inadequacy.


A follow-up investigation from that and other ICUs in France indicated that family satisfaction with their relatives’ care was due in part to their being of French descent and having a language and cultural values similar to those of the ICU caregivers. Family satisfaction also related to information provided by hospital physicians, a patient-to-nurse ratio of 3 : 1 or less, knowledge of the specific role of each caregiver, help from the family’s own physician, sufficient time spent giving information, and an absence of perceived contradictions in information provided by caregivers.


In a study from one U.S. hospital, families were interviewed about their experiences in the ICU and the decision-making process for withholding or withdrawing life support. They reported a high incidence of conflicts, the vast majority of which were between themselves and physicians. The conflicts most often involved problems in communication or perceived unprofessional behavior, such as disregarding the primary caregiver in treatment decisions. These families identified pastoral care and prior discussion of treatment preferences as sources of psychological support. They appreciated lenient visiting hours and the availability of family conference rooms. Most of the families singled out attending physicians as the preferred source of information and reassurance.

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Jul 21, 2019 | Posted by in CARDIOLOGY | Comments Off on End-of-Life Care in Respiratory Failure

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