Examkin

Question

Difficulty: MediumDecision-Making Capacity

An inpatient medical team is evaluating a 47-year-old woman who recently presented with acute kidney injury due to a severe systemic lupus erythematosus flare. Laboratory studies reveal a blood urea nitrogen of 92 mg/dL, a serum creatinine of 6.8 mg/dL, and a potassium level of 5.1 mEq/L. Her electrocardiogram is normal, and she is currently hemodynamically stable. The nephrology service recommends urgent initiation of hemodialysis. The patient is awake, alert, and oriented to person, place, and time. She scores 29/30 on a standardized cognitive screening examination. During the interview, she communicates clearly and states she understands that the medical team believes her kidneys are failing and that dialysis is recommended to prevent fatal complications. However, she adamantly refuses the procedure. When asked to explain her reasoning, she states, "My kidneys are perfectly healthy. The doctors are lying to me so they can hook me up to that machine and extract my rare antibodies to sell to researchers." Which of the following is the most appropriate next step in management?

  1. Contact the patient's healthcare proxy or next of kin to make a treatment decisionAnswer
  2. B
    Petition the local judicial system for a formal declaration of legal incompetence
  3. C
    Honor the refusal because the patient demonstrates an accurate understanding of the proposed intervention
  4. D
    Initiate hemodialysis immediately under the ethical principle of implied consent
  5. E
    Discharge the patient from the hospital against medical advice with close outpatient follow-up

Answer

Contact the patient's healthcare proxy or next of kin to make a treatment decision
The patient lacks medical decision-making capacity due to a fixed, false belief (delusion) that impairs her ability to appreciate the reality of her clinical situation and reason rationally about treatment. Although she is oriented, scores well on cognitive testing, and can state the doctors' intended plan (demonstrating intact understanding), her paranoid delusion about antibody extraction prevents her from applying this information to her own care. Because she lacks capacity, the medical team cannot honor her refusal. However, her condition (BUN 92 mg/dL, normal potassium and EKG) is urgent but not an immediate, split-second emergency that justifies bypassing all surrogate decision-makers. Therefore, the appropriate next step is to identify and contact her healthcare proxy or legal next of kin to provide substitute consent.

Step-by-Step Solution

1
Evaluate the four pillars of decision-making capacity for the patient refusing treatment.
The patient shows intact communication and understanding, but severely impaired appreciation and reasoning due to a fixed delusion.
All four components must be intact for a patient to have the capacity to refuse life-saving medical treatment.
2
Determine the patient's overall capacity status.
The physician concludes the patient lacks medical decision-making capacity.
Her paranoid belief about antibody extraction prevents rational processing of her clinical reality, rendering her unable to make an informed choice.
3
Identify the appropriate legal mechanism for substitute decision-making.
The clinical team must contact the patient's healthcare proxy or legal next of kin.
When an adult lacks capacity in an urgent but not immediately life-threatening situation, consent must be obtained from an authorized surrogate.

Key Concept

Decision-making capacity requires four components: communicating a choice, understanding relevant information, appreciating the situation and its consequences, and reasoning rationally. A psychiatric condition or delusion that impairs appreciation or reasoning renders a patient incapacitated, requiring surrogate consent for urgent procedures.
Rate this question

Topics

Decision-Making Capacity

More questions from this topic