A50-year-old man has been having fainting "spells" for about 2 weeks. during the episodes, his ecg shows a ventricular rate of 25 beats/min and 100 p waves per minute. after about 30 seconds of fainting, a normal sinus rhythm recurs. what is his likely diagnosis? a) atrial flutter. b) first-degree a-v block. c) second-degree a-v block. d) third-degree a-v block. e) stokes-adams syndrome
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A50-year-old man has been having fainting "spells" for about 2 weeks. during the episodes, his ecg s...
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