Thus, it must "skip a beat" and it will resume exactly 2 P-to-P intervals after the last normal sinus beat. When every other QRS complex is a PAC, then the rhythm is referred to as "atrial bigeminy".
When every other QRS complex is a premature atrial contraction, then the rhythm is ... thinking that sinus bradycardia is present, because every other beat is a nonconducted PAC, and the QRS ...
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