AbstractObjective: To analyse the perinatal outcome in pregnancies associated with oligohydramnios onset after 34 weeks of pregnancy. Method: All pregnant women who attended our antenatal OPD and had an ultrasound diagnosis of oligohydramnios at or after 34 weeks of gestation were followed up till delivery. The patients diagnosed with oligohydramnios and with gestational age less than 37 weeks were given hydration therapy. Perinatal outcome was observed for the patients having oligohydramnios from the 34 to 40 weeks of gestation. Result: Patients with idiopathic oligohydramnios responded to hydration therapy better than that of those with oligohydramnios alongwith risk factors (75% Vs 20%). The perinatal outcomes of idiopathic group were much better than patients having risk factors [meconium staining liquor (12.5%, 17.2%; p value 0.3907), APGAR score <7 at 5minutes (3.13%, 12.9%; p value 0.0162), NICU admission (5.2%, 19.35%; p value 0.0026) and no neonatal death in idiopathic group versus 6 neonatal death in high risk group]. Both the groups had higher induction of labour (57.6%,, 44.08%; p value <.005) and caesarean section rate (61.46%,73.12%). Conclusion: Isolated oligohydramnios responds to hydration therapy and have better perinatal outcomes than that of oligohydramnios with risk factors. Induction of labour rate is higher in idiopathic group, but caesarean section rate is higher in oligohydramnios with risk factors.
Keywords: Idiopathic Oligohydramnios; Oligohydramnios with Risk Factor; Hydration Therapy; Perinatal Outcome.