What does the bottom number in a blood pressure reading signify when the last sound disappears?

The bottom number in a blood pressure reading represents the diastolic pressure. This measurement indicates the pressure in the arteries when the heart is resting between beats, which is when the last sound is heard through a stethoscope as the blood flow resumes smoothly. Understanding diastolic pressure is crucial, as it reflects the minimum pressure exerted on the arterial walls and can provide insight into cardiovascular health. High diastolic pressure may indicate increased risk of heart disease or other related conditions. Knowing the correct interpretation of blood pressure readings is essential for healthcare providers to assess and monitor a patient's health accurately.