cardiovascular
Premature ventricular contractions
A premature contraction (PVC) is a common event where the heartbeat is initiated by Purkinje fibers in the ventricles rather than by the sinoatrial node. PVCs may cause no symptoms or may be perceived as a "skipped beat" or felt as in the chest. PVCs do not usually pose any danger.
Underlined words are explained — tap any of them.
More in Heart
Coronary artery diseaseHeart failureArrhythmia (atrial fibrillation)CardiomyopathyHeart valve diseaseRheumatic heart diseaseCongenital heart defectHeart attackCardiac arrestMyocarditisAortic stenosisLong QT syndrome
See all of Heart →Plain-language summary adapted from Wikipedia. Not medical advice.