What characterizes diastolic blood pressure?

Diastolic blood pressure refers to the lowest pressure in the arteries during the cardiac cycle, specifically when the heart's ventricles are relaxed and filling with blood. This phase, known as diastole, allows for optimal blood flow back to the heart and through the arteries. The measurement reflects the pressure that is exerted against the arterial walls during this relaxed state, which is crucial for understanding circulatory health.

Recognizing diastolic pressure as the lowest point is essential because it provides insight into how well the heart can maintain blood flow during rest periods, indicating vascular resistance and overall cardiovascular efficiency. High diastolic pressure may signal issues such as hypertension, while excessively low values may indicate potential inadequate blood supply to tissues. Understanding diastolic blood pressure gives healthcare providers an invaluable tool for cardiovascular assessment, influencing treatment decisions and lifestyle recommendations.