Medicine

What is blood pressure and how to measure blood pressure? What is Sphygmomanometer? | by Best knowledge | Nov, 2021

Best knowledge

As the heartbeats, it supplies blood to the organs and tissues of the body. It pumps blood into the large blood vessels of the circulatory system and creates pressure on the vessels’ walls that is called blood pressure.

Types of Blood Pressure:-

blood pressure readings are made up of two values :

Blood pressure is measured in units of millimeters of mercury (mmHg).

For example, for someone with a reading of 130/90 mmHg, this means systolic blood pressure of 130mmHg and diastolic blood pressure of 90mmhg.

As a general guide,

◆ Normal blood pressure is considered to be between 90/60mmHg and 120/80mmHg.

High blood pressure is considered to be 140/90mmHg or higher (Hypertension).

◆ Low blood pressure is considered to be 90/60mmHg or lower (Hypotension).

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Measuring Blood Pressure

Blood pressure is measured with an instrument called a sphygmomanometer.

There are three types of sphygmomanometers.

● Mercury Sphygmomanometer.

● Aneroid Sphygmomanometer.

● Automatic Digital Sphygmomanometer.

◆ How To Measure?

● The length of the cuff bladder used for the measurement of blood pressure should be equal to 80% of the circumference of the upper arm.

● Wrap the cuff around the upper arm such that the lower edge of the cuff is one inch above the antecubital fossa.

● Press the stethoscope’s bell lightly over the brachial artery which is below the cuff’s edge.

● Release the air from the cuff at a moderate rate to 180mmHg.

● Monitor the first knocking sound by listening with the help of a stethoscope and also by observing the mercury gauge.

● This should be done for both the arms and the pressure, the position of the subject and the size of the cuff should be recorded.

● If the pressure is more, then the blood pressure should be measured with a few minutes of gaps between the two measurements.

● If the blood pressure is more than 180/120mmHg, immediate actions should be taken.


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