Unknown patient monitored during cardiac surgery. Patient is placed on bypass before the start of this encounter.
Rhythm analysis shows a slow and irregular rhythm, which converts into ventricular fibrillation.
This encounter shows a slow and irregular beat. This converts into an extremely erratic rhythm called ventricular fibrillation (VFib), indicated by a chaotic pattern with no QRS or P waves. VFib is considered the most dangerous of heart rhythms. During VFib the heart quivers, producing no meaningful cardiac output. This results in cardiac arrest with no pulse and loss of consciousness. VFib requires immediate cardioversion or death is nearly certain.
Source: PhysioNet MGH040