Blood Pressure Measurement

By  , Expert Content
Feb 25, 2011

Blood pressure is usually measured in a doctor’s office with device known as a sphygmomanometer. A sphygmomanometer has an arm cuff, dial, pump, and valve. Your doctor will use a stethoscope also. The stethoscope is used to listen to the Korotkoff sounds. The appearance of the sound indicates the systolic blood pressure and the disappearance of Korotkoff sound defines the diastolic blood pressure.

Blood pressure in children and teens is measured in the same way as in adults using a sphygmomanometer. But the cuff used for children is smaller than the cuff used in adults.


[Read: High Blood Pressure: A Rising Risk for Kids & Teens]


At times an electronic instrument may be used to measure your blood pressure. If your BP is high when measured by electronic BP instrument, your doctor will measure your BP manually with a sphygmomanometer. The sphygmomanometer is most accurate for measurement of BP.

  • The normal blood pressure is lower than 120/80 mmHg.
  • If your systolic and/or diastolic pressures are more than 140/90 mmHg on several occasions, your doctor may diagnose it as hypertension.
  • If you have diabetes or kidney disease, blood pressure reading above 130/80 mmHg will be considered high.
  • HBP ranges in children are different as it varies according to age, sex, height and weight.


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