What does the systolic measurement represent in blood pressure readings?

The systolic measurement in blood pressure readings represents the phase of the heart's contraction when the ventricles pump blood into the arteries. During this phase, the pressure exerted by the blood against the walls of the arteries is at its highest, which is why it's the first number recorded in a blood pressure reading. This value is critical for assessing heart health, as it reflects how well the heart is functioning during the active phase of blood circulation.

In contrast to the systolic measurement, the diastolic measurement reflects the pressure in the arteries during the relaxation phase of the heart when the ventricles fill with blood, indicating the lowest point of pressure. Understanding the distinction between these phases provides valuable insight into cardiovascular health and can help in diagnosing various conditions, such as hypertension.