A 46-year-old woman presents after two syncopal episodes associated with palpitations. She reports feeling a rapid heart rate before losing consciousness. She has a few witnessed episodes in the emergency…
Key Points Definition: The QT interval reflects the time it takes for total ventricular depolarization and repolarization (Q wave onset to T wave end). Clinical Relevance: QT prolongation increases the…
An 87-year-old man is brought to the emergency department by EMS with acute chest pain. The following ECG is obtained on arrival: