conduction

Introduction p>Atrioventricular (AV) conduction is the process by which electrical impulses from the atria are transmitted to the ventricles. The AV node is a group of specialized cells located in the heart’s septum that helps to regulate this conduction. Problems of Heart Rhythm When AV conduction is delayed or blocked, it can cause a variety of heart rhythm problems, including: First-degree AV block Second-degree AV block Third-degree AV block (complete heart block) First-degree AV block is the mildest form of AV block. It occurs when the electrical impulse from the atria takes longer than normal to reach the ventricles. This can cause the heart rate to slow down slightly. Second-degree AV block is a more serious condition. It occurs when some of the electrical impulses from the atria are blocked from reaching the ventricles. This can cause the heart rate to slow down significantly, or it can cause irregular heartbeats.

Introduction The atrioventricular (AV) node is a small structure in the heart that helps to control the heartbeat. It is located in the center of the heart, between the atria (the upper chambers of the heart) and the ventricles (the lower chambers of the heart). The AV node receives electrical signals from the sinoatrial node (SA node), which is the heart’s natural pacemaker. The SA node generates electrical signals at a regular rate, about 60 to 100 times per minute. These signals travel through the atria, causing them to contract. The AV node slows down the electrical signals before they travel to the ventricles. This delay allows the atria to have time to contract and empty their blood into the ventricles. If the AV node did not slow down the electrical signals, the ventricles would contract too soon and not have enough time to fill with blood. After the AV