The intrapartum fetal condition is assessed a major priority to all obstetrics. The cardiotocogram and fetal cord blood gas analysis have been widely used as a means of evaluating fetal condition, which has sometimes an incomplete correlation.
And this study was performed in an attempt to derive the improved information from cardiotocogram. We studied 64 cases with normal pregnancy, analyzing quantitatively the change in the oscillation cycle and the amplitude of fetal heart rate,
following
by measuring cord blood gas analysis.
@ES The results were as follows:
@EN 1. In the distribution rate of the oscillation cycles and amplitudes, the group below 7.20 pH showed the highest value, 30.1 % on 2~6 cycle per minute and above 25 beat per minute.
The group between 7.20~7.25 pH showed the highest value, 34.3% on 2~6cpm and 10~25bpm. The group between 7.25~7.40 pH showed the highest value, 38.3% on 2~6cpm and 10~25bpm.
2. In the incidence rate of the oscillation cycle below 2cpm, the group below 7.20pH was 28.00±22.98%, and between 7.25~7.40 pH was 6.33±5.65%. There was a statistical difference between both group (P<0.05).
3. In the incidence rate of the oscillation cycle between 2~6cpm, the group below 7.20pH was 47.33±18.11%, between 7.20~7.25pH was 75.00±12.96%, and between 7.25~7.40 pH was 69.67±15.59%. There were the statistical differences between below
7.20
pH
and the others (P<0.01).
4. In the incidence rate of the oscillation amplitude between 5~10bpm, the group blow 7.2pH was 7.33±6.78%, 7.20~7.25 pH was 19.00±11.21% and between 7.25~7.40 pH was 18.67±12.72%. There were the statistical differences between below 7.20 pH
and
the
others (P<0.01).
5. In the incidence rate of the oscillation amplitude between 10~25bpm, the group below 7.20 pH was 19.67±17.57%, between 7.20~7.25 pH was 42.67±14.38%, and between 7.25~7.40 pH was 54.17±13.07%. there were the statistical differences between
below
7.20 pH and the other (P<0.05).
6. In the incidence rate of the oscillation amplitude above 25bpm, the group below 7.20 pH was 58.33±26.37%, between 7.20~7.25 pH was 29.37±22.03%, and between 7.25~7.40 pH was 23.67±15.02%. There were the statistical differences between below
7.20
pH and the others (P<0.05).
We concluded that the quantitave analysis of cardiotocogram was one of the useful means in predicting fetal distress.
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