Blood pressure is classified by two measurements, the systolic (first number) and diastolic (second number) pressures. For most adults, normal blood pressure at rest is within the range of 100–140 millimeters mercury (mmHg) systolic and 60–90 mmHg diastolic. For most adults, high blood pressure is present if the resting blood pressure is persistently at or above 130/80 or 140/90 mmHg. Different numbers apply to children. Ambulatory blood pressure monitoring over a 24-hour period appears more accurate than office-based blood pressure measurement.
blood pressure is classified by two measurements the systolic (first number) and diastolic (second number) pressures for most adults normal blood pressure at rest is within the range of 100–140 millimeters mercury (mmhg) systolic and 60–90 mmhg diastolic for most adults high blood pressure is present if the resting blood pressure is persistently at or above 130/80 or 140/90 mmhg different numbers apply to children ambulatory blood pressure monitoring over a 24-hour period appears more accurate than office-based blood pressure measurement