66 year old woman presents with chest tightness and nausea. She has a history of diabetes and is a smoker. The ECG is consistent with which ONE of the following diagnoses? Any history suggestive of ...

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2:1 atrioventricular block is a form of second-degree AV nodal block and occurs when every other P wave is not conducted through the AV node to get to the ventricles, and thus every other P wave is ...

A 12-lead ECG is an important initial diagnostic test for identifying the likely cause of the transient loss of consciousness in some people, and especially in predicting adverse events (for example, ...