During an emergency cholecystectomy, the patient is most likely experiencing which condition?

• A. Anaphylaxis
• B. Hypokalemia
• C. Hypovolemia
• D. Malignant hyperthermia

Answer: (D)

Malignant hyperthermia is an acute, life-threatening reaction to certain anesthesia triggering agents such as volatile anesthetics or depolarizing muscle relaxants. In an emergency cholecystectomy, these agents can provoke a rapid, uncontrolled rise in skeletal muscle metabolism. This causes a sudden increase in carbon dioxide production and oxygen demand, leading to tachycardia, muscle rigidity, metabolic acidosis, hyperkalemia, and, if not treated, hyperthermia and organ dysfunction. Because this crisis is directly linked to intraoperative anesthesia exposure, it is the most fitting intraoperative emergency for this scenario. Anaphylaxis, hypovolemia, and hypokalemia describe different problems (allergic reaction, blood loss-related volume depletion, and electrolyte disturbance) that don’t align with the characteristic hypermetabolic crisis seen with malignant hyperthermia. Dantrolene is the key treatment, along with stopping triggering agents and supportive care.