A 78-year-old man with a history of heart failure presents for routine follow-up 1 week after insertion of a pacemaker. As part of the evaluation, a 12-lead ECG is obtained. The correct diagnosis is ...
Denver, CO - Perhaps you've seen them—compact, electronic devices with complex circuitry and sophisticated programming, a state-of-the-art battery, and a single external wire separating into two leads ...
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