diastólicas

Diastolic refers to the phase of the heartbeat when the heart muscle relaxes. This relaxation allows the heart chambers, specifically the ventricles, to fill with blood. During diastole, the atrioventricular valves (mitral and tricuspid) are open, allowing blood to flow from the atria into the ventricles. Simultaneously, the semilunar valves (aortic and pulmonary) are closed, preventing backflow into the arteries.

Blood pressure is measured in two values: systolic and diastolic. The diastolic pressure is the lower number and represents the pressure in the arteries when the heart is at rest between beats. Normal diastolic blood pressure is generally considered to be around 80 mmHg, though this can vary. Persistently high diastolic pressure, known as diastolic hypertension, can increase the risk of heart disease and stroke. Conversely, unusually low diastolic pressure, or diastolic hypotension, can indicate insufficient blood flow to vital organs. Understanding the diastolic phase is crucial for comprehending the cardiac cycle and overall cardiovascular health.