then the rhythm is referred to as “atrial bigeminy” as seen in this strip above. If a PAC occurs when the AV node has not yet recovered from the refractory period, it will fail to conduct to ...

Bigeminy is an irregular heart rhythm where every normal beat ... and are called premature atrial contractions (PACs).

Patients requiring a pacemaker often have atrial fibrillation (AF), which increases the risk of thromboembolism and, consequently, the risk of morbidity and mortality. To maintain sinus rhythms ...

A 76-year-old woman presents with a persistently rapid heart rate that she attributes to her pacemaker. What does the ECG ...

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".