Match each clinical scenario involving end-of-life or critical care decisions to the primary ethical or legal framework that justifies or guides the medical action.
- A patient suffers a traumatic brain injury. Formal testing confirms irreversible cessation of all brain and brainstem function. The physician discontinues the ventilator despite the family's requests to wait for a miracle.Uniform Determination of Death Act (UDDA)
- A patient with terminal lung cancer experiences severe air hunger. The attending physician initiates a rapid titration of a morphine infusion to relieve the dyspnea, acknowledging the foreseeable but unintended risk of hastening death.Principle of double effect
- A patient suffers a massive ischemic stroke and is permanently unconscious. Her appointed healthcare proxy declines a feeding tube, stating, 'She told me repeatedly she never wanted to be kept alive artificially.'Substituted judgment standard
- An unrepresented adult with profound, lifelong intellectual disability requires a medically necessary surgery. The ethics committee recommends proceeding because the objective benefits outweigh the surgical risks.Best interest standard
Answer
The correct matches are: 1) Brain death scenario matches the Uniform Determination of Death Act. 2) Morphine for air hunger matches the Principle of double effect. 3) Proxy relying on prior statements matches the Substituted judgment standard. 4) Unrepresented adult with lifelong disability matches the Best interest standard.
Each scenario uniquely demonstrates a foundational bioethical or legal standard tested on the USMLE Step 3. Brain death declaration relies on the UDDA. Palliative opioid use with foreseeable secondary harm relies on the principle of double effect. Surrogate decisions based on prior wishes rely on substituted judgment, whereas decisions for those without a capacity history rely on the best interest standard.
Step-by-Step Solution
Key Concept
Ethical and Legal Frameworks in Surrogate Decision-Making and End-of-Life Care