- The first number is the systolic pressure. Systolic pressure represents the peak blood pressure that occurs when the heart contracts.
- The second number is the diastolic pressure. Diastolic pressure represents the lowest blood pressure that occurs when the heart relaxes between beats.
These two pressures are expressed in millimeters of mercury (mm Hg) because the original devices that measured blood pressure used a column of mercury. Blood pressure measurements are recorded as systolic/diastolic (say "systolic over diastolic"). For example, if your systolic pressure is 120 mm Hg and your diastolic pressure is 80 mm Hg, your blood pressure is recorded as 120/80 (say "120 over 80").
Automatic blood pressure monitors
Blood Pressure Monitor Price In India that measure your blood pressure in your finger or your wrist are not usually accurate and are not recommended.