Abstract:

Oligohydroamnios is defined as, depending on gestational age being <5 percent of amniotic fluid index, or undependent on gestational age ≤5 cm amniotic fluid index. The object of this prospective study is to define, if amniotic fluid index of ≤5 cm (oligohydroamnios) can be used to estimate neonatal acidosis earlier, 5th minute Apgar score <7 and the risk of cesarean section due to fetal distress correctly. Tococardiography is performed to 120 cases in intrapartum period who have amniotic fluid index ≤5 cm in ultrasonography and gestation week of ≤26. Right after each birth blood samples were taken for umblical cord arterial blood pH and fifth minute Apgar scores were checked. The relationships among amniotic fluid volume, tocography findings, umblical cord blood pH and 5th minute Apgar score was examined. In oligohydroamnios group, the incidences of cesarean section due to fetal distress was 14.2 %, 5th minute Apgar score <7 was 11.4 % and less than 7.1 umblical arterial pH was 2.8 % while in the group with amniotic fluid index >5 cm the same ratios were 12 %, 0 %, 2 % respectively. The average pH values were meaningfully differentiating (7.23 to 7.27) while the average Apgar scores showed no meaningfull difference. However, when average pH values were examined by terms of labor methods no reasonable differences were observed between groups with normal vaginal labor and cesarean section due to fetal distress. No Apgar score below 7 was recorded. In conclusion. amniotic fluid index ≤5 cm (oligohydroamnios) is not a good predictor of negative fetal results. However, when oligohydroamnios is together with pathologic cardiotocography findings, the probability of facing pathologic acidemia increases.

Keywords: