Your Heart Health Glossary of Terms
Fibrillation: Rapid contractions of the heart muscles, sometimes called quivering of the heart muscle. When your heart is in fibrillation blood cannot be pumped in or out properly. Fibrillation can lead to cardiac arrest, a stopping of all heart functions.
Flutter: Ineffective contractions of the heart muscle.
Disclaimer: All glossary definitions were created by The Mikey Network for educational use on this website.