Atrioventricular (AV) delay

The Atrioventricular (AV) delay is the time period between the atria (upper heart chambers) contracting to push blood into the ventricles (lower chambers) and the ventricles contracting to pump blood out of the heart. In a healthy heart, this delay allows the ventricles to fill properly before they contract. In cardiac devices like pacemakers, adjusting the AV delay helps synchronize the heartbeat, ensuring efficient blood flow. Proper AV delay is crucial for optimal heart function, promoting effective circulation and reducing strain on the heart.