Cardiac arrest is defined as a sudden stop in heart function. Essentially, the pumping function of the heart is compromised, oftentimes due to a dangerous malfunction of the heart's electrical system.

Sudden cardiac arrest is when the heart suddenly stops pumping blood or stops adequately pumping blood to circulate it throughout the body. Often, the heart stops completely, or the heart’s rhythm is ...

Angela Ryan Lee, MD, FACC, is a board-certified cardiology and internal medicine physician. She also holds board certifications from the American Society of Nuclear Cardiology and the National Board ...

Cardiac arrest is often sudden and shocking. It can happen without warning, even in young, healthy individuals. Subscribe to read this story ad-free Get unlimited access to ad-free articles and ...

Cardiac arrest means an absence of cardiac activity — in essence, a person’s heart stops beating. While certain health conditions and other factors increase the risk of cardiac arrest, it can happen ...