The sinus rate is actually 68 beats/min — a normal sinus rhythm with atrial bigeminy and not truly a tachycardia. Philip Podrid, MD, is an electrophysiologist, ...

Medically reviewed by Jeffrey S. Lander, MD Bigeminy is an irregular heart rhythm where every normal beat is followed by an abnormal one, often due to premature ventricular contractions (PVCs). It ...

Normal Sinus Arrhythmia. In sinus arrhythmia, 'normal' refers to physiological changes in heart rate related to respiration. This arrhythmia is most marked in those with high vagal tone, such as ...

Two runs of ventricular bigeminy were recorded (Fig. 1) on the day of the preoperative health check. In this regular arrhythmia, each sinus beat alternates with a VPC for some period 2 , 3 .

When every other QRS complex is a premature atrial contraction, 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 ...