Consent and capacity in an elderly patient refusing surgery
An 82-year-old man with mild cognitive impairment (MMSE 24/30) is admitted with an acutely ischemic leg. He is lucid, oriented to time and place, and understands that without revascularization he risks amputation or death. He refuses surgery, saying he is "tired of hospitals" and wants to go home. His daughter insists that he "must" have the operation and asks you to proceed. The patient's wife, who is his usual caregiver, says he has always been independent and has previously refused treatments. There is no advance directive.
1. How should you assess decision-making capacity in this patient?
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Capacity assessment (four elements)
- Understanding: can he explain the diagnosis, the proposed surgery, and the alternatives?
- Appreciation: does he understand how the information applies to him (risk of amputation/death)?
- Reasoning: can he weigh risks and benefits and give reasons for his choice?
- Expression of choice: can he communicate a consistent decision?
Application
- Mild cognitive impairment does not automatically mean incapacity; capacity is decision-specific.
- He appears oriented and can articulate a reason ("tired of hospitals"), which suggests he may have capacity.
- Document the assessment, ideally with a second clinician.
Exam point: capacity is presumed unless proven otherwise, and it is assessed for the specific decision, not globally.
2. What is the ethical and legal basis for proceeding, and how should you handle the daughter's request?
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Ethical/legal basis
- Autonomy: a capacitated adult has the right to refuse treatment, even if the refusal may lead to death.
- Informed refusal: he must be informed of the consequences and alternatives; document this.
- Beneficence vs autonomy: the clinician's duty to help does not override a valid refusal.
- Legal: in most jurisdictions, a capacitated refusal is legally binding; the daughter is not the decision-maker while he retains capacity.
Handling the daughter
- Acknowledge her concern and explain the legal and ethical framework.
- Offer a family meeting and palliative/supportive care options.
- If there is doubt about capacity, seek a formal psychiatric or geriatric assessment.
- If capacity is lost later, follow surrogate decision-making rules (wife as likely surrogate, in his best interests).
Exam point: the clinician must protect the patient's autonomy while supporting the family.
3. What practical steps ensure the refusal is valid and documented?
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Practical steps
- Confirm capacity with a structured assessment and document it.
- Ensure understanding: use teach-back, involve an interpreter if needed.
- Discuss alternatives: conservative management, palliative care, amputation if it becomes necessary.
- Document the conversation, the patient's words, the risks explained, and the witnesses.
- Offer a second opinion and time to reconsider.
- Safety plan: home support, follow-up, and clear return precautions.
- Notify the team and, if conflict persists, involve the ethics committee.
Exam point: a valid refusal requires capacity, information, voluntariness, and documentation.