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 ...

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 ...

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

Christensen, Clayton M. "We've Got Rhythm! Medtronic Corp.'s Cardiac Pacemaker Business (TN)." Harvard Business School Teaching Note 698-056, March 1998.