Measuring Procedure; Connect Stethoscope Tubing To The Chestpiece; Inflating The Cuff; Systolic Blood Pressure Reading - Microlife BP AG1-30 Mode D'emploi

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4.4. Measuring procedure

After the cuff is properly worn on the arm, connect stethoscope

tubing of to the chestpiece attached on the cuff. Make sure the

chestpiece is in contact with skin and above the brachial artery.

Wear the binaural (earpieces) properly to check the Korotkoff's

sound during measurement.

Before using the stethoscope, be sure there is no crack on

the diaphragm, earpieces, and tubing. Any improper setup or

damage of the stethoscope will cause distorted sound or poor

sound transmission to make inaccurate reading.

Close the air valve on the bulb by turning the screw clock wise.

Do not over-tighten. Squeeze the inflation bulb with the hand at

a steady rate until the pointer on the gauge is 30 mmHg above

your normal systolic pressure value. If you are not sure the

value, inflate to 200 mmHg first.

Slowly open air valve by turning screw counter clockwise and

hold stethoscope chestpiece over brachial artery. Proper de-

flation rate is essential for an accurate reading, so you should

practice and master a recommended defla tion rate of 2 - 3 mmHg

per second or a drop of 1 - 2 marks on the pressure gauge each

heartbeat. You should not keep the cuff inflated any longer than

necessary. As the cuff begins to deflate, you must listen care-

fully with the stethoscope. Note the reading on the gauge as

soon as you hear a faint, rhythmic tapping or thumping sounds.

This is the systolic blood pressure reading. Listen care fully and

familiarize yourself with pulse (Korotkoff's) sound.

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