What is the top number in a blood pressure reading, signifying the first sharp thump sound?

The top number in a blood pressure reading is known as the systolic pressure. This measurement signifies the pressure in the arteries when the heart beats and pumps blood throughout the body. The first sharp thump sound that is heard through a stethoscope provides critical information about the force of blood exerted against the artery walls during this contraction phase of the heart cycle.

Systolic pressure is crucial because it indicates how well the heart is functioning and the condition of the arteries. A higher systolic reading may indicate increased pressure in the arteries, which can be a sign of hypertension or other cardiovascular issues. Understanding systolic pressure is essential in monitoring heart health and diagnosing conditions that may require medical attention.