Decision-Making Capacity and Refusal of Treatment: The Daily PANCE Blueprint
A 68-year-old man with long-standing type 2 diabetes is admitted with a gangrenous, foul-smelling left forefoot and early sepsis. Vascular surgery recommends a below-knee amputation and explains that without it he is likely to die. He declines the operation. He is alert and fully oriented, names his diagnosis, and restates in his own words that refusing surgery will probably kill him. He explains his reasoning: after a lifetime of walking, independence matters more to him than length of life. He has no psychiatric history, no delirium, and a normal cognitive screen, and he gives the same answer consistently across two separate conversations a day apart. His daughter, who holds his medical power of attorney, asks the team to operate anyway. Which of the following is the most appropriate next step?
A. Obtain a psychiatric consultation to determine whether he is competent
B. Document his decision-making capacity and honor his refusal
C. Proceed with amputation based on the medical power of attorney
D. Petition the court to appoint a guardian to consent on his behalf
E. Proceed with amputation under the emergency exception to informed consent
Answer and topic summary
The answer is B. Document his decision-making capacity and honor his refusal
Capacity is a clinical determination, and the treating clinician makes it. So the first and only necessary step is to document it and act on it. This patient demonstrates all four elements of decision-making capacity: he can communicate a choice, understand the risks and benefits, appreciate that they apply to him specifically, and reason from his own stated values to a consistent conclusion.
A patient with capacity may refuse a life-saving intervention. Refusing the recommended treatment is not itself evidence of impaired capacity — that is the single most common error in this scenario. And capacity is not competence: capacity is medical, decision-specific, and can fluctuate, while competence is a global legal status determined by a court. A psychiatric consultation is optional and genuinely helps in ambiguous cases, but it is not required and psychiatry does not adjudicate competence.
A surrogate decision-maker and a medical power of attorney take effect only when the patient LACKS capacity — they never override a patient who has it, however much the family disagrees. Guardianship is for patients without capacity and no appropriate surrogate. The emergency exception to informed consent applies only when a patient cannot consent and no surrogate is reachable — never when a patient with capacity has said no.
The right care here: honor the refusal, document the capacity assessment and the conversation carefully, and pivot to aggressive medical management, wound care, analgesia, and an early palliative-care conversation.
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