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This is a recording from a 68 year old man post myocardial infarction, cardiac arrest and coronary artery bypass. His medications included amiodarone, Lasix, metoprolol, Lipitor, potassium and Zestril. Rate (/min) 78 QT (ms) 379
pr (ms) 157 QRS axis (degrees) 95
QRS (ms) 73