Pulssijännitteiden

Pulssijännitteiden refers to the electrical signals that control the heart's rhythm and coordinate its contractions. These signals originate from the sinoatrial node (SA node), also known as the heart's natural pacemaker, located in the right atrium. The SA node generates an electrical impulse at a rate of 60 to 100 beats per minute, which spreads through the atria, causing them to contract and pump blood into the ventricles.

The electrical impulse then reaches the atrioventricular node (AV node), which acts as a gateway between the atria and the ventricles. The AV node slows down the impulse slightly, allowing the ventricles to fill with blood. From the AV node, the impulse travels through the bundle of His and the Purkinje fibers, which conduct the electrical signal to the ventricles, causing them to contract and pump blood out of the heart.

Pulssijännitteiden can be measured using an electrocardiogram (ECG), which records the electrical activity of the heart. An ECG can help diagnose various heart conditions, such as arrhythmias, which are abnormal heart rhythms, and ischemia, which occurs when the heart muscle is not receiving enough blood flow.

Understanding pulssijännitteiden is crucial for diagnosing and managing heart conditions, as well as for developing new treatments for cardiac diseases. Research in this area continues to advance our knowledge of the heart's electrical system and improve patient outcomes.