66 year old male patient monitored during transurethral prostrate resection. Patient has a history of coronary artery disease, mitral regurgitation, a ventricular septal defect, and a ventricular aneurysm
Rhythm analysis shows sinus bradycardia.
This encounter shows a slow rate below 60 bpm, with a regular rhythm and normal P waves. This is sinus bradycardia. Conditioned athletes are known for having sinus bradycardia at rest, due to high heart pumping efficiency. Sleep is often a harmless cause as well in normal individuals. However, conditions such as hypothermia and hypothyroidism can also cause sinus bradycardia.
Source: PhysioNet MGH034