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Review Question - QID 213378

Atrioventricular (AV) Heart Block Atrioventricular (AV) Block AV Blocks Types Electrocardiogram Findings Treatment   Comments First degree AV block ↑ PR interval (> 0.2 secs) 1:1 ratio of P waves and QRS complexes No treatment is required unless other ECG changes (prolonged QRS)   Typically s QID: 213378 (M2.OMB.19.4757)
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QID 213378 (Type "213378" in App Search)
A 67-year-old man presents to the emergency department for evaluation of weakness. He states that he was working in his yard when he began to feel weak and lightheaded. He states that he has had similar episodes over the past several weeks that generally resolve within a few minutes. He decided to seek care when his symptoms persisted for more than an hour. His past medical history is significant for hypertension and hyperlipidemia. His temperature is 98.4°F (36.9°C), blood pressure is 137/77 mmHg, pulse is 55/min, respirations are 17/min, and oxygen saturation is 98% on room air. An electrocardiogram is obtained as shown in Figure A. Initial laboratory tests are pending. Which of the following is the most likely diagnosis in this patient?
  • A
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  • A