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3.5 PREPARATION
Follow these recommendations to prepare for operation:
•
Power on by turning the ' volume /on/off knob (2) '.
•
Apply coupling gel to the faceplate of probe or abdomen
•
Move the transducer slowly over the lower part of the abdomen.
3.6 USING PRODUCT TO DETECT
Locate the position of the fetus by hand touching, firstly to find out the
best direction to the fetal heart. Place the faceplate of probe at the best
position for detecting fetal heartbeat. Adjust the probe to obtain an
optimum audio signal ideally by angling the probe around. Generally, the
site of heart of fetus is 1/3 below of navel line at its earlier stage, it then
moves upward with increasing of gestational period, and the site of heart
of fetus will be a little deviation to left or right with different fetus. Pls.
make sure that the surface of probe should be contacted fully with the
skin. After the sound become clear and stays stable for a few seconds,
the FHR value will appear on the LCD in real time. If no coupling gel,
water can be used.
Note: abnormal value of FHR may appear during the searching of fetal
heart.
