Beta Blockers USMLE Step 1 Practice Question
A 16-year-old boy undergoes emergency appendectomy. Shortly after induction with succinylcholine and sevoflurane, he develops rapidly increasing end-tidal CO2 (8.5 kPa), generalized muscle rigidity, and tachycardia (HR 156/min). Core temperature is 40.2°C. Blood pressure is 158/92 mmHg; oxygen saturation remains 98% on 100% FiO2. He has no prior anesthetic complications or family history of adverse reactions. Which agent is most appropriate for immediate treatment?
Answer choices
- AAtropine
- BMethylene blue
- CNaloxone
- DDantroleneCorrect answer
- ENeostigmine
- FProcainamide
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