FC1400 User Manual
FC1400OM-2.04 39 / 95
▣ How to measure FHRs
① Place a fixing belt below the waist of the patient.
② To remove air bubbles between the abdomen of the patient and the surface of the US probe,
please apply a sufficient amount of ultrasonic gel to the US probe.
③ Feel the abdomen of the patient to find the back side of the fetus and place the US probe there. If
the fetus faces laterally, please place the US probe on the position shown in the figure below.
2. If the US Probe is placed on the side of the chest of the fetus instead of the back side,
ultrasounds will not be accurately shot to the heart of the fetus; thus, the heartbeat sounds of
the fetus may be frequently missed.
④ Move the US probe little by little around its position to place the US probe in a position where the
sounds from the heart of the fetus are heard relatively loud and clear and the heart shape in the
FHR display area turns green and blinks according to the sounds from the heart of the fetus;
adjust the speaker volume so that the sounds from the heart of the fetus becomes appropriately
louder.
⑤ Put the button on the upper part of the US probe into the hole in the fixing belt to fix the US probe
so that the US probe does not slip.
If the probe cable is fixed near the head of the patient, the cable will not be damaged, and there
will be relatively less movement by the probe.
It will take around 2~8 seconds for FHRs to be calculated and displayed.
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