Futile care

Futile care, or futile treatment, is an issue in medical ethics, involving judgements that it may variously be unwise, inhumane, or unethical to begin or continue a treatment for putting a disorder into remission or cure, or to treat symptomatically. There are two broad categories of futility:

• Quantitative futility: Sometimes called physiological futility, the proposed treatment or procedure has an unreasonably low probability of achieving the goal.

This is sometimes called physiological futility. In instances of physiological futility, the health care professional judges that the desired treatment will not restore or improve function

• Qualitative futility":Proposed interventions of this type can deal with decisions to withhold treatment unlikely to improve a self-limiting condition, or to attempt disease-modifying treatment in a patient judged to be to have a diagnosis incompatible with life, where aggressive treatment cannot affect the outcome.

In either case, "Who determines the harm/benefit ratio and whether it is unreasonable? Are treatments outside of accepted professional practice properly referred to as "futile?" Should rationing decisions be disguised as questions of futility?"

Quantitative futility

An example of the former might be the use of antibiotics to treat a minor viral infection such as a cold; an example of the latter might be excision of the primary tumor in high-grade metastatic cancer, where the patient's distress is caused by the metastasis, not by local effects of the original disease.

Qualitative futility

Examples of quantitative care could include:

• full resuscitative measures for an infant with a terminal, congenital condition, such as anencephaly
• Other than comfort care, in a mass casualty situation, such as a patient in the invariably fatal [[acute radiation sickness#Cardiovascular (CV)/ Central Nervous System (CNS) syndrome|central nervous system presentation of acute radiation syndrome.

As opposed to some of the other examples, which often are case-by-case and dealing with individuals, this may involve decisions for a population as a whole, such as triage for mass casualty incidents when a disaster plan has been invoked.

Ethical guidance

There may medical precedents or ethical guidelines that apply, which sometimes can conflict with religious or philosophical concerns. Going back to the spiritual father of medicine, Hippocrates, a fundamental principle is "do no harm". In more modern terms, this may mean that the risk of a procedure outweighs any potential benefit, although the risk-benefit balancing will change as medical knowledge.

For example, the Hippocratic Oath contains the promise "I will not use the knife, not even on sufferers from stone, but will withdraw in favor of such men as are engaged in this work", at a time when there was a very major distinction between medicine and surgery. In contrast, appropriate treatment of stones in body organs or ducts can involve effective treatments that are neither strictly medical or surgical, such as lithotripsy or endoscopic procedures to distrupt or remove the object. In some cases, medical therapies avoid surgery with drugs to dissolve the stone or prevent its recurrence.

The Doctrine of Double Effect, articulated by Thomas Aquinas, deals with many issues of ethics, including futility. For example, it may be determined that a patient has end-stage cancer for which only the control of pain can improve quality of the limited life. There is a spectrum of responses that can range from an increased probability (theoretical or real) of causing respiratory failure through the use of adequate doses of opioids to control pain, to passive and active euthanasia.

Potentially shortening life to relieve pain is often more of a theoretical than real situation. When the drugs are prescribed by a physician expert in pain medicine, the current standard is that there is no upper limit to the dose needed to relieve pain, but, given in appropriate quantities and amounts, opioids do not necessarily depress respiratory function. If, however, they do, a new class of ethical issues emerges: is it appropriate to put the patient on an artificial ventilator for the mechanical support of respiration? If it is determined the patient is in end-stage coma, under what circumstances is it appropriate to withdraw that support?

This decision cannot be justified only because the physician does not intend to cause death. "A variety of substantive medical and ethical judgments provide the justificatory context: the patient is terminally ill, there is an urgent need to relieve pain and suffering, death is imminent, and the patient or the patient's proxy consents."

Is the use of opioids in a terminal weaning protocol, preventing the appearance of discomfort, ethical? Under what circumstances, if any, is it appropriate to withdraw respiratory support from an aware but terminal patient, and, if so, is terminal weaning, which will induce unconsciousness, an ethical requirement or a violation of patient autonomy?

Legal guidance

There are laws and court decisions both to forbid and encourage the use of what may be judged futile care.

Texas Futile Care Law and related legislation

Only two U.S. states