What factors determine a patient's ability to refuse life-sustaining treatment?

• A. Capacity, clarity of thought, understanding of consequences, and absence of coercion
• B. Capacity alone
• C. Family wishes override
• D. Physician's opinion only

Answer: (A)

The key idea is decision-making capacity: a patient must meet several elements to validly refuse life-sustaining treatment. They need to understand the information about their condition and the options, appreciate how those options would affect their own situation, reason about the consequences of choosing one option over another, and be able to communicate a clear, consistent choice. Importantly, the decision must be voluntary, not the result of coercion or manipulation.

This combination—understanding, appreciation of consequences, reasoning, and voluntariness—together determines whether a patient can legitimately refuse treatment. If any part is missing, the patient may not have capacity, and the decision should be revisited when capacity is present or a valid surrogate decision-maker steps in.

Why other ideas don’t fit: simply having capacity in one sense isn’t enough if the patient can’t understand, appreciate, or reason about the options, or if they are being pressured. Family wishes don’t override a competent patient’s autonomous choice, though surrogates may guide decisions when capacity is lacking. A physician’s opinion alone cannot substitute for the patient’s own informed decision, as autonomy requires valid, voluntary consent or refusal by the patient.