To Assess the Maternal and Perinatal Outcome with Isolated Oligohydramnios in Third Trimester of Pregnancy

Introduction: Oligohydramnios is described as a condition with decreased amniotic fluid volume relative to gestational age. Oligohydramnios is most commonly defined as an amniotic fluid index (AFI) ? 5 cm or the largest vertical pocket measuring ? 2 cm. Isolated oligohydramnios (IO) refers to the presence of oligohydramnios without fetal structural and chromosomal abnormalities, without fetal growth restriction, without intrauterine infection and in the absence of known maternal disease. Aim: To study was to analyse the maternal and fetal outcome in isolated oligohydramnios in third trimester of pregnancy. Method: This is prospective hospital based observational study which was carried out in department of obstetrics and gynaecology, S.P. Medical College, Bikaner for a period from June 2021 to May 2022. This study included 100 pregnant women, who fulfill inclusion and exclusion criteria, out of which 50 pregnant women with 28 completed weeks of gestation who had singleton pregnancy with cephalic presentation and Amniotic Fluid Index (AFI) < 5 cm enrolled as study cases while 50 pregnant women with AFI > 5 cm were in control group. Results: Majority of the patients were in 21-30 years of age in both groups. Majority of patients in both groups were illiterate, unbooked, belonged to rural area and were from lower middle socioeconomic status; hence both groups were comparable in this regards.  In our study in group A out of 50 patients, 33 (66%) had LSCS and 17 (34%) patients delivered by vaginal route and group B out of 50 patients, 43 (86%) patients delivered by vaginal route and only 7 (14%) patients had for LSCS.  NICU admission in group A was 14 (28%) and in group B 3(6%) respectively. Conclusion: C-Section rates were more common in group A compared to group B. NICU admission rate were more in group A (40%) compare to group B (14%). In Isolated oligohydramnios more babies had APGAR<7 at 1& 5min.