Diastoliseen

Diastoliseen is a term derived from the Greek words "diastole," meaning separation or stretching, and "sein," meaning to be. It refers to the phase of the cardiac cycle during which the heart relaxes and fills with blood. This process is crucial for the heart's function as it ensures that the heart is ready to pump blood efficiently during the subsequent systole phase.

During diastole, the heart's chambers (atria and ventricles) expand to accommodate the incoming blood. This expansion is facilitated by the relaxation of the cardiac muscle fibers. The atria begin to fill with blood from the veins, while the ventricles fill with blood from the atria. The filling of the ventricles is aided by the pressure generated in the atria during atrial contraction, known as atrial kick.

The duration of diastole varies depending on the heart rate. In a healthy adult at rest, diastole typically lasts about 0.4 to 0.5 seconds. However, this duration can be affected by various factors, including heart rate, blood pressure, and the presence of any cardiac abnormalities.

Diastoliseen is an essential component of the heart's overall function and plays a critical role in maintaining adequate blood flow and oxygenation throughout the body. Any disruption in the normal diastoliseen process can lead to cardiovascular issues, such as heart failure or arrhythmias.