52 year old male patient with cardiomyopathy monitored.
Rhythm analysis indicates dual-chamber pacing and normal sinus rhythm.
This episode highlights dual-chamber pacing, where both atrial and ventricular contractions are initiated by a pacemaker. This can be seen as two sharp, vertical spikes before each QRS. Dual-chamber pacing most closely resembles normal physiology of cardiac initiation, compared to other pacemaker modes. Proponents of dual-chamber pacing believe it is a more effective option, and can prevent dangerous conditions such as atrial fibrillation. Dual-chamber pacing has been favored by both the AHA and ACC.
Source: PhysioNet MGH075