Pumpafunkciót

Pumpafunkciót refers to the pumping function of the heart. It describes the mechanical process by which the heart contracts and relaxes to circulate blood throughout the body. This function is crucial for delivering oxygen and nutrients to tissues and removing waste products. The heart's pumping action is a continuous cycle driven by electrical impulses.

The pumping action is primarily performed by the heart's muscular walls, the myocardium. During systole, the ventricles contract, ejecting blood into the arteries. During diastole, the ventricles relax, filling with blood from the atria. Valves within the heart ensure unidirectional blood flow, preventing backflow.

The effectiveness of the pumpafunkciót is measured by various parameters, including cardiac output, stroke volume, and ejection fraction. Cardiac output is the total volume of blood pumped per minute, while stroke volume is the amount of blood pumped with each beat. Ejection fraction represents the percentage of blood in the ventricle that is pumped out with each contraction.

Impairments in pumpafunkciót can lead to various cardiovascular diseases, such as heart failure. In heart failure, the heart is unable to pump blood effectively to meet the body's needs. This can result from damage to the heart muscle due to conditions like coronary artery disease, hypertension, or valvular heart disease. Understanding and assessing pumpafunkciót is vital for diagnosing and managing these conditions.