What is cardiac suction?

Cardiac suction refers to the phenomenon where the heart generates negative pressure during diastole, allowing blood to flow into the ventricles from the atria. This action is facilitated by the relaxation of the heart muscle and the opening of the atrioventricular valves. Proper cardiac suction is essential for adequate filling of the heart chambers and efficient blood circulation. Impairments in this mechanism can lead to reduced cardiac output and various heart-related issues.