1 MCQs in Medicine for NEET PG
A 68-year-old man is brought to the emergency department after being found unconscious in his apartment during a cold snap. Core body temperature is 29°C. His ECG shows sinus bradycardia with a characteristic deflection at the QRS-ST junction (marked **A** in the diagram) and prolonged PR, QRS, and QT intervals. Which of the following best describes the pathophysiological basis for the ECG finding marked **A**?
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