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Zorluk: ZorInformed Consent and Refusal of Care

A 74-year-old man is evaluated in the hospital for worsening right foot pain and fever. He has a history of type 2 diabetes mellitus, peripheral artery disease, and mild major neurocognitive disorder. Evaluation reveals a gangrenous right foot ulcer complicated by osteomyelitis. The surgical team recommends an urgent below-the-knee amputation to prevent overwhelming sepsis. During the preoperative discussion, the patient is alert and oriented, demonstrates a clear understanding of the risks and benefits of the procedure, and correctly states that without surgery, he will likely die. He signs the informed consent form.

The following morning, as the patient is being prepared for the operating room, he becomes tearful and tells the medical team, "I have changed my mind. I cannot live without my leg. I would rather let the infection take its course." The attending physician evaluates the patient; he remains alert, oriented, and calmly reiterates his understanding that refusing the surgery will likely lead to his death. The patient's son, who is his legally appointed healthcare proxy, arrives and insists that the surgery proceed. The son states, "He has dementia and he already signed the papers yesterday. He is just scared. As his proxy, I authorize the surgery."

Which of the following is the most appropriate next step in management?

  1. Cancel the procedure and continue medical managementCevap
  2. B
    Proceed with the procedure as authorized by the healthcare proxy
  3. C
    Proceed with the procedure based on the patient's previously signed consent form
  4. D
    Request an urgent psychiatry consultation to formally assess decision-making capacity
  5. E
    Consult the hospital ethics committee to mediate the conflict with the son

Cevap

Cancel the procedure and continue medical management.
The most appropriate next step is to cancel the procedure and continue medical management. This scenario highlights two critical principles of medical ethics and informed consent. First, informed consent is an ongoing process, and a patient with intact decision-making capacity has the absolute right to revoke consent at any time before an intervention, even if doing so will likely result in their death. Second, a legally appointed healthcare proxy only assumes decision-making authority when the patient loses the capacity to make their own medical decisions. Decision-making capacity requires a patient to communicate a choice, understand the relevant information, appreciate the medical consequences of the decision, and manipulate the information to provide a rational reason. In this vignette, the attending physician evaluates the patient and explicitly confirms that he remains alert, oriented, and understands that refusing surgery will lead to his death. A history of mild major neurocognitive disorder does not automatically preclude a patient from having capacity; capacity is decision-specific and determined by the clinical evaluation at the time the decision is made. Because the patient currently has capacity, his autonomous refusal must be honored, rendering the son's proxy authority inactive and the previously signed consent form void.

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1
Assess the patient's current decision-making capacity.
The physician's evaluation confirms the patient is alert, oriented, and clearly understands the fatal consequences of refusing surgery.
Current capacity must be established whenever a patient makes a high-risk decision to refuse previously agreed-upon care.
2
Evaluate the validity of the previously signed consent form.
Because the patient currently possesses capacity, he is legally permitted to revoke his prior consent.
Consent is an ongoing process, not a binding contract; competent patients can withdraw consent at any time.
3
Determine the legal authority of the healthcare proxy.
The son's authority as proxy is dormant and inactive because the patient retains decision-making capacity.
Surrogate decision-makers only possess legal authority when the patient is incapacitated.
4
Formulate the next best step in management.
Honor the patient's autonomous decision to refuse the amputation and provide alternative, supportive medical care.
Respect for patient autonomy requires physicians to honor the competent refusal of life-saving treatment.

Anahtar Kavram

Competent patients have the right to refuse life-saving medical treatment and can revoke prior consent at any time. A designated healthcare proxy only assumes decision-making authority when the patient loses capacity, regardless of underlying cognitive diagnoses.
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Informed Consent and Refusal of Care

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