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Review Question - QID 214418

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: 214418 (M2.OMB.4760)
In scope icon M 6 A
QID 214418 (Type "214418" in App Search)
A 67-year-old man presents to the emergency department after fainting while mowing his lawn. He states that he stood up off his riding mower and fell to the ground. He reportedly regained consciousness within several seconds and was without symptoms. He denies associated chest pain. His past medical history is significant for hypertension and diabetes mellitus. His temperature is 98.7°F (37.1°C), blood pressure is 152/99 mmHg, pulse is 60/min, respirations are 15/min, and oxygen saturation is 98% on room air. Physical exam is notable for an obese man in no acute distress. Cardiopulmonary exam is unremarkable, and there is trace bipedal edema observed in the lower extremities. An ECG is obtained as shown in Figure A. A chest radiograph and head CT are performed and are unremarkable. Which of the following is the most likely diagnosis?
  • A
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  • A