Amniotic Fluid Volume: An Important Deciding Factor for Pregnancy Continuation in Preterm Premature Rupture of Membranes

Abstract

Aims and Objectives: To find out various risk factors affecting fetomaternal outcomes in preterm premature rupture of membranes (PPROM). Materials and Methods: A prospective study after approval from the ethical committee was conducted at VMMC and Safdarjung Hospital, New Delhi, Department of Obstetrics and Gynaecology from December 2020 to May 2022 in which 100 pregnant women with preterm premature rupture of membrane between 32 and 36 weeks of gestation were enrolled. Patients were followed with Total leucocyte count (TLC), urine R/M, urine C/S, high vaginal swab C/S, and C-reactive protein along with routine antenatal care investigations. Intravenous antibiotics were given to all patients for 48 h followed by oral antibiotics for 5 days. All patients were on follow-up and managed conservatively and induction of labor was done at 37 weeks or earlier in case of fetal distress and presence of signs and symptoms of chorioamnionitis. Both mother and baby were followed till 7 days after delivery. Results: In the present study, we observed the following risk factors that had adverse effects on fetomaternal outcomes in PPROM patients. The association of oligohydramnios (amniotic fluid index [AFI] <5) with neonatal sepsis (P = 0.025) and neonatal death (P = 0.025) was found to be significant. Vaginal infection was found to be significantly associated with birth asphyxia (P = 0.024), APGAR <7 at 1 min (P = 0.015), neonatal intensive care unit (NICU) admission (P = 0.009), and postpartum hemorrhage (PPH) (P = 0.002). The association of urinary tract infection (UTI) with neonatal sepsis (P = 0.01), birth asphyxia (P = 0.005), APGAR <7 at 1 min (P = 0.001), NICU admission (P = 0.002), neonatal death (P = 0.01), and PPH (P = 0.0004) was found to be significant. We also observed that the duration from membrane rupture to delivery had no adverse effect on fetomaternal outcome, may be as we had given antibiotics to all patients from the time of admission. Conclusions: The conclusion from the present study was that oligohydramnios (AFI <5) is a significant risk factor for adverse neonatal outcomes in PPROM along with vaginal infections and UTIs. Hence, amniotic fluid volume should also be considered as an important deciding factor for pregnancy continuation in PPROM.

Keywords

• amniotic fluid volume; oligohydramnios; preterm; preterm premature rupture of membranes