atriální

Atriální refers to anything relating to or originating from the atria of the heart. The atria are the two upper chambers of the heart, the right atrium and the left atrium. The right atrium receives deoxygenated blood from the body, while the left atrium receives oxygenated blood from the lungs.

Common medical conditions associated with the atria include atrial fibrillation, a type of irregular heartbeat where the atria quiver instead of beating effectively. Atrial flutter is another condition where the atria beat too rapidly and regularly. Atrial septal defects are congenital heart conditions characterized by an opening between the two atria, allowing blood to flow abnormally between them.

The electrical activity of the atria plays a crucial role in initiating the heartbeat. The sinoatrial node, located in the right atrium, acts as the heart's natural pacemaker, generating electrical impulses that cause the atria to contract. These impulses then travel to the ventricles, prompting them to contract and pump blood throughout the body. Issues with atrial electrical conduction can lead to various arrhythmias.

Understanding atriální structures and functions is fundamental in cardiology for diagnosing and treating a range of cardiac diseases. Medical imaging techniques like echocardiography and electrocardiography are commonly used to assess the atria's size, function, and electrical activity.