A premature ventricular contraction occurs when a focus in the ventricle generates an action potential before the next scheduled sinoatrial nodal action potential. Ventricular bigeminy occurs when ...

hey everyone it's Nera and in this video I'm going to be going over premature ventricular contractions so let's get started pbcs are early contractions that originate in the ventricles so we're ...

In the last few weeks, the Skeptical Cardiologist has had a run on with patients with premature atrial contractions (PACs). I've discussed in detail premature ventricular contractions (PVCs) here and ...

What Are Premature Ventricular Contractions (PVCs)? If your heart feels out of rhythm or “flutters,” especially when you're anxious or stressed, it could be caused by premature ventricular ...

Premature ventricular complexes (PVCs) are extra heartbeats originating from the heart’s lower chambers, potentially causing palpitations or fluttering sensations. While occasional PVCs are common, ...

The rhythm is irregular, but there is a pattern. All of the long RR intervals are the same (1.16 sec), the intermediate RR intervals are the same (0.64 sec), and the short RR intervals are the same (0 ...

Do you ever feel like your heart misses a beat? There’s a good chance that what you noticed was a heartbeat that happened sooner than it usually does. When that happens, and then follows up with a ...

A healthy heart beats in a steady rhythm, with the upper and lower chambers beating in a synchronized and consistent pattern. After each heartbeat is a pause, and then a predictable heartbeat, and ...

An electrocardiogram (Fig. 1) of the Case Records of the Massachusetts General Hospital (in the September 18 issue) needs a few comments or corrections. First of all, the entire tracing in Figure 1 is ...