Measuring Procedure; Inflating The Cuff; Systolic Blood Pressure Reading - Microlife BP AG1-10 Manual De Instrucciones

IB AG1-10 e_f_s_ru 4706.qxd 11/22/06 8:55 AM Page 8

4.4. Measuring procedure

4.4.1. Put the chestpiece under the cuff
The chestpiece shall not be placed ON or INTO the cuff, it shall be
placed either under the cuff, or 1-2cm below it. The chestpiece is
then placed correctly , when the Korrotkoff's sound appears
strongest ('loudest'). 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.

4.4.2. Inflating the cuff

Close the air valve on the bulb by turning the screw clockwise.
Do not over-tighten. Squeeze the inflation bulb with the hand at
a steady rate until the pointer on the gauge is 30mmHg above
your normal systolic pressure value. If you are not sure the
value, inflate to 200mmHg first.

4.4.3. Systolic blood pressure reading

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 deflation rate of 2-3mmHg
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 carefully and
familiarize yourself with pulse ( Korotkoff's ) sound.
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