A cognitively impaired elderly patient cannot provide consent for an urgent hip fracture repair. The healthcare proxy is unreachable. What is the anesthesiologist's appropriate next step?
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A
Postpone surgery until the proxy is reached, regardless of urgency
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B
Proceed under the emergency exception to informed consent after interdisciplinary agreement
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C
Obtain consent from the nearest available family member informally
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D
Document the situation and defer entirely to the surgeon