a. The product is in compliance with EN1060 Non-invasive
sphygmomanometers;
b. Operating procedure:
1. Position the pressure cuff
Before taking the blood pressure of the patient, make the patient to relax and
rest for at least 15minutes.This will reduce the error due to physical activity.
Slip the pressure cuff over the right or left arm and extent arm and palm up.
Whether sitting or lying, be sure that your arm rests at the same level as your
heart. Turn the cuff so that the stethoscope diaphragm (sound head) is on the
inside of the arm just above the elbow. This locates it over the large artery
near the hollow of the elbow, (this artery can be also found by feeling for the
pulse of the artery) Grasp the end of the cuff and pull it firmly, then wrap it
around and over the arm. Press together with Velcro tape to bind the cuff
securely.
2. Inflate the cuff
Feel the pulse of the artery with your fingertips to be sure the heads of the
stethoscope is located directly over it. Insert the earpieces of the stethoscope
(adjust by turning earpieces to fit comfortably in your ears ) Hold the gauge
in your left hand or clip on the loop provided for reading. Close the air-flow
valve on the bulb (turn clockwise) DO NOT OVERTIGHTEN. Inflate the
cuff by repeatedly squeezing the bulb with your hand. Listen to the pulse beat
whilst inflating the cuff. Watch the gauge. When you can no longer hear the
pulse beat, raise the pressure an additional 30mm.
3. Slowly deflate the cuff
Slowly open the air-flow valve by turning counter clockwise so that the
pressure drops 2-4mmHg with each beat of your heart. (This will usually
mean a drop of one to two marks on the gauge every second)
The rate of deflation is important for accurate reading. Remember, high
pressure of the cuff has shut off all blood flow to the arm. So do not leave it
inflated fully any longer than absolutely necessary.
4. Systolic pressure
After opening the air-flow valve, listen carefully for a pulse beat. The
moment you hear the faint rhythmic tapping or thumping sound of the pulse
beat, note the reading on the gauge. This is your systolic (upper) blood
pressure.
It may be difficult at first for you to detect the sounds of the pulse beat, but,
listen carefully and acquaint yourself with these unfamiliar sounds. You
should also notice the needle on the gauge "bounce" when your systolic
pressure is reached.
5. Diastolic pressure
Allow the pressure to continue dropping at the same rate as before 2-4mmHg
per second. Listen carefully with the stethoscope The sounds you hear will
change the phases. From the first sharp tagging or thud, .they will soften to
blowing or swishing sounds. Watch the falling needle. At the exact point
when you can no longer hear the sounds, read the gauge. This is your
diastolic (lower) blood pressure reading.
c. Notice
With proper care, your blood pressure Monitor will provide many years of
reliable service To insure a good functioning of the unit, follow these basic
rules.
*Pressure gauge should be handled with care, do not drop, do not keep it in
sunlight, do not keep it in refrigerator, do not press or squeeze it.. Needle
should indicate zero when cuff is fully deflated.
*Always deflate cuff before storing.
*Do not keep sharp objects of stethoscope and sphygnomanometer
d. Maintenance
Under normal condition, the device is recommended to be calibrated every
two years. Calibration should also be done after repair. Calibration should be
carried out at point 50mmHg and 200mmHg.
