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 ...
Pacemakers treat arrhythmia but don’t prevent heart attacks, which happen when plaque buildup or blood clots block arteries supplying the heart. Heart attack symptoms with a pacemaker include chest ...
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