진통시 태아심박동 변이지수의 임상 적용 = Clinical Application of Fetal Heart Rate Variability Index during Labor

다국어 초록 (Multilingual Abstract)

Accurate assessment of fetal condition during labor constitutes one of the major problems of modern obstetrics. The clinical usage of intrapartum fetal monitoring has increased dramatically in the past few years. This study was performed in an attempt to evaluate the significance of fetal heart rate pattern with variability index in intrapartum fetal surveillance. So our purpose is to decrease the frequency of fetal blood sampling for checking pH. The fetal heart rate monitoring during labor was evaluated by the fetal blood pH determination obtained from 52 patient in high risk pregnancy at the Obstetric and Gynecologic department of Ewha Womans University from December, 1980 to February, 1981. The results were as follow; l. In the incidence of fetal heart rate pattern during labor, the most frequent one was variable deceleration and the next was acceleration, no periodic change, late deceleration and prolonged deceleration. 2. When deceleration (late, variable and prolonged deceleration) pattern was appeared in association with low variability index (below 4), the incidence of Apgarscores below 6 in one minute was high (80%). In contrast, if variability index was above 5, the incidence of low Apgar scores below 6 in one minute was low (30~40%) and it was compatible with fetal blood pH findings 3. Especially, when late deceleration pattern was appeared and if variability index was below 4, a1l of the babies were in distress. But when prolonged deceleration was appeared even associated with 5 or more variability index, all of the fetus were also in distress. 4. When acceleration or lacking periodic change were appeared, almost all babies were in good condition regardless of variability index chages.