Premature ventricular beats, also known as premature ventricular contractions (PVCs), are abnormal heartbeats that occur earlier than expected in the heart's ventricles. The ventricles are the lower chambers of the heart responsible for pumping blood into the arteries.
In a healthy heart, electrical signals travel through the heart in a specific order, coordinating the contractions of the atria and ventricles to maintain an efficient and effective heartbeat. However, in the case of premature ventricular beats, an abnormal electrical impulse originates from the ventricles before the next expected heartbeat, causing an early contraction.
Premature ventricular beats can be caused by various factors, including underlying heart conditions, such as coronary artery disease or heart failure. They can also be triggered by excessive caffeine or alcohol intake, tobacco use, emotional stress, or certain medications. In some cases, no specific cause can be identified.
Typically, individuals with premature ventricular beats may experience a fluttering or pounding sensation in the chest, lightheadedness, or shortness of breath. However, many people with this condition may not experience any symptoms at all.
While occasional premature ventricular beats are generally harmless and require no treatment, frequent or sustained PVCs may require further evaluation by a healthcare professional. Treatment options may include addressing any underlying conditions, lifestyle modifications, or medications to alleviate symptoms or regulate heart rhythm.
