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Answer
Treat Patient B first.
This is a classic clinical teaching question. Here is the reasoning:
The counterintuitive answer:
- Patient A - glucose 35 mg/dL but awake - her brain is compensating (likely chronic/gradual hypoglycemia, upregulated alternative fuel use, or adapted threshold)
- Patient B - glucose 75 mg/dL but unconscious - 75 mg/dL is a normal glucose level, so something else is causing unconsciousness, which is far more dangerous and urgent
Why Patient B is the priority:
- Unconsciousness at a normal glucose = emergency - This means there is an acute, serious underlying cause (stroke, intracranial bleed, sepsis, drug overdose, cardiac event, etc.) that needs immediate workup and treatment
- Altered consciousness = airway at risk - An unconscious patient can lose airway protection, aspirate, or arrest at any moment
- Patient A is awake and alert - She is talking, protecting her airway, and her glucose, while low, is not causing immediate life threat at this moment. She can receive oral/IV glucose and be monitored
Key teaching point:
Treat the patient, not the number.
A glucose of 35 with a wide-awake patient is less immediately dangerous than a glucose of 75 with an unconscious patient. The clinical status (mental state, airway, hemodynamics) always takes priority over the lab value alone.
In practice: Stabilize Patient B (airway, IV access, check vitals, rapid workup for cause of unconsciousness) while a nurse simultaneously starts glucose correction for Patient A.
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