Heart attacks and cardiac arrest differ in causes, symptoms, and treatments. Learn how recognizing these emergencies improves ...

Researchers have significantly expanded the understanding of the genetic causes of atrial fibrillation (AF), a common heart condition that leads to an irregular heartbeat and increases the risk of ...

Early data in mice and human tissue indicate that using drugs or gene therapy could allow for cardiac healing in ischemic HF.

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 ...

A premature atrial contraction (PAC) occurs when a focus in the atrium (not the SA node), generates an action potential before the next scheduled SA node action potential. There are four main ...

they observed a significant increase in the force of heart muscle contraction and accelerated calcium handling -- key processes for a healthy heartbeat. "After you eat a meal, it's been shown that ...

These channels act as pathways for electrical currents that help reset the heart's electrical activity after each contraction. For patients with LQTS, this process is prolonged, leading to an ...

the researchers found that it increased the force of heart contractions, as well as improved calcium handling. Both these contribute positively to heart health. The increase in blood pressure and ...