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 ...

Ventricular arrhythmia occurs when the heart’s lower chambers beat out of sync, which can prevent the heart from effectively pumping blood throughout the body. Diagnosis of ventricular arrhythmia ...

Hypokalemia and even low-normal plasma potassium levels increase the risk of ventricular arrhythmias among patients with cardiovascular disease. An assessment of a strategy of actively increasing ...

SAN FRANCISCO — While renal denervation achieved its goals of lowering blood pressure and heart rate in a small series of especially high-risk patients with drug-resistant hypertension, it also ...

Palo Alto, CA - A new study shows that individuals undergoing treadmill testing who had ventricular arrhythmias during the recovery phase had an almost doubling of mortality in the five-year follow-up ...

Magnesium plays a vital role in maintaining a steady heart rhythm by regulating electrolyte movement within heart tissues; deficiencies can increase the risk of arrhythmias. While not a primary ...

A heart arrhythmia is when your heart beats too fast, too slow, or out of sync. Some arrhythmias can be genetic. A genetic arrhythmia happens when one or both of your parents pass down a gene change ...

DEAR MAYO CLINIC: I've noticed that sometimes my heart races or skips a beat. What causes this? Is there treatment for it? ANSWER: What you're experiencing may be an abnormal heart rhythm, also known ...