Frequently Asked Questions on Blood Pressure Monitors


What does the upper number and the lower number in a blood pressure reading represent?
  • Systolic is the top number. It represents the pressure as your heart contracts to pump blood to the body
  • Diastolic is the bottom number. It represents the pressure between beats, when your heart relaxes
What should be the readings of a blood pressure monitor when the blood pressure is normal?

Normal Systolic Blood Pressure should be less than or equal to 134 and a normal Diastolic Blood Pressure must be less than or equal to 84

What should be the readings of a blood pressure monitor for someone with hypertension?

Hypertension - Systolic BP - greater than 135, diastolic BP - greater than 85.

What is more important - Systolic or Diastolic readings?

Both readings are equally important. Systolic Reading shows your blood pressure during a heart contraction and the Diastolic Reading shows blood pressure between heart contractions. For your particular situation, you should discuss both measurement results with your doctor.

Is it normal for the blood pressure to vary?

Yes, it is normal for a persons blood pressure to change throughout the day and night, or in different settings where you may measure your blood pressure. Many things, such as stress levels, food or drink intake, activity levels, even time of day can all affect a person’s blood pressure reading at any given time.