Premature ventricular contraction (PVC) is a type of abnormal heartbeat, or arrhythmia. It happens when the heartbeat begins in the lower, rather than the upper, heart chambers. This creates an ...

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 ...

Your heart is responsible for pumping blood and oxygen throughout your body. The heart performs this function by expanding and contracting. This movement is what produces your heartbeat. Your ...

Trigeminy is a heart rhythm irregularity characterized by a premature ventricular contraction occurring every third heartbeat. While many people with trigeminy experience no symptoms, others may feel ...

In a normal heart rhythm, your heart beats in a steady, even way. The upper part of your heart (atria) squeezes and pushes blood to the lower part (ventricles), pumping blood and oxygen out to the ...

Bigeminy is an irregular heart rhythm where every normal beat is followed by an abnormal one, often due to premature ventricular contractions (PVCs). It can feel like skipped or extra beats, but in ...

Although premature ventricular beats (PVBs) in young people and athletes are usually benign, they may rarely mark underlying heart disease and risk of sudden cardiac death during sport. This review ...

Correspondence to Dr Alessandro Biffi, Med-Ex, Medicine & Exercise, Medical Partner Scuderia Ferrari, Rome, Italy; a.biffi{at}libero.it Long-term physical activity induces structural, functional and ...

A premature ventricular contraction occurs when a focus in the ventricle generates an action potential before the next scheduled sinoatrial nodal action potential. Premature, occurring earlier than ...

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, ...