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Results for “Multi-Society Task Force on Persistent Vegetative State”

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PubMed1994

Medical aspects of the persistent vegetative state (1).

This consensus statement of the Multi-Society Task Force summarizes current knowledge of the medical aspects of the persistent vegetative state in adults and children. The vegetative state is a clinical condition of complete unawareness of the self and the environment, accompanied by sleep-wake cycles, with either complete or partial preservation of hypothalamic and brain-stem autonomic functions. In addition, patients in a vegetative state show no evidence of sustained, reproducible, purposeful, or voluntary behavioral responses to visual, auditory, tactile, or noxious stimuli; show no evidence of language comprehension or expression; have bowel and bladder incontinence; and have variably preserved cranial-nerve and spinal reflexes. We define persistent vegetative state as a vegetative state present one month after acute traumatic or nontraumatic brain injury or lasting for at least one month in patients with degenerative or metabolic disorders or developmental malformations. The clinical course and outcome of a persistent vegetative state depend on its cause. Three categories of disorder can cause such a state: acute traumatic and non-traumatic brain injuries; degenerative and metabolic brain disorders, and severe congenital malformations of the nervous system. Recovery of consciousness from a posttraumatic persistent vegetative state is unlikely after 12 months in adults and children. Recovery from a nontraumatic persistent vegetative state after three months is exceedingly rare in both adults and children. Patients with degenerative or metabolic disorders or congenital malformations who remain in a persistent vegetative state for several months are unlikely to recover consciousness. The life span of adults and children in such a state is substantially reduced. For most such patients, life expectancy ranges from 2 to 5 years; survival beyond 10 years is unusual.

Coma↗
PubMed1998

The vegetative and minimally conscious states: ethical implications.

Modern medical technology has created new syndromes of severe and permanent brain damage. In the first 25 years of the right-to-die debate, the permanent vegetative state has been the paradigmatic neurologic syndrome for decisions to discontinue treatment. In the near future, however, a far more problematic syndrome may be even more important in the right-to-die debate, the minimally conscious state. This paper presents a few of the medical and ethical similarities and differences between the permanent vegetative and minimally conscious states and discusses how value-laden these decisions may become in the future.

Brain Diseases↗
PubMed1997

Persistent vegetative state: clinical and ethical issues.

Coma, vegetative state, lock-in syndrome and akinetic mutism are defined. Vegetative state is a state with no evidence of awareness of self or environment and showing cycles of sleep and wakefulness. PVS is an operational definition including time as a variable. PVS is a vegetative state that has endured or continued for at least one month. PVS can be diagnosed with a reasonable amount of medical certainty; however, the diagnosis of PVS must be kept separate from the outcome. The patient outcome can be predicted based on etiology and age. Using outcome probabilities and etiology as criteria, patients can be subdivided in 5 groups and reasonable management guidelines can be suggested. Three levels of care can be provided to PVS patients: high technology, supportive and compassionate care. Pragmatic options for the various subgroups of patients are suggested. Management decisions will remain difficult for both the family and the health-care team. The role of the physician in these difficult cases is to share the decision-making with the family.

Adult↗
PubMed1995

Position of the American Dietetic Association: legal and ethical issues in feeding permanently unconscious patients.

Health care team members, including the dietitian, must set patient-centered treatment goals that are handled individually and that respect the unique values and personal decision of the patient. The patient's expressed desire is the primary guide for determining the extent of nutrition and hydration once the patient is diagnosed as being in a PVS. Within the extent of the law, the family should share decision making when the patient's preference is not stated and the family is in agreement about medical care. The health care team will need to discuss with the family as needed the issues of ethics, values, religious guidelines, and pastoral advice. If the patient's choice is feeding, the dietitian will ensure that the composition of the feeding promotes nutritional health. If the patient's choice is cessation of feeding, the dietitian should explain what is known about the duration of time between cessation of feeding and death. Sensitivity to the family's needs and responsiveness to their questions are imperative in both scenarios. Within institutions, the ethics committee should help establish and implement defined written guidelines for care of the permanently unconscious. The dietitian should be required to be a member of or consultant to such a committee and should serve an integral role in development of institutional policy. The dietitian must provide education about nutrition and hydration issues, serve as a patient advocate, and participate in the legal and ethical issues regarding feeding. The dietetics community is involved in the legislative arena at the state and local level to promote the use of advanced directives and to affect legislative and societal changes that result in appropriate care for patients in a PVS.

Dietetics↗