A 50-year-old woman presents with palpitations. She reports symptoms of an upper respiratory infection and has a low grade fever. The following ECG is obtained:
Key Points Definition: T wave alternans (TWA) is a phenomenon where there is a beat-to-beat variation in the amplitude or morphology of the T wave on the ECG, without affecting…
An elderly male presents with weakness and lightheadedness to his primary care physician. He is referred to the ED after the following ECG is obtained: