Low amniotic fluid index at term as a predictor of adverse perinatal outcome.

Abstract

Objective: To assess the prevalence of adverse perinatal outcomes in antenatal women with low amniotic fluid index at term. Study Design: Observational Cross-sectional Analysis. Setting: Department of Gynaecology and Obstetrics Hayatabad Medical Complex, Peshawar. Period: 2nd February 2020, to 5th February 2021. Methods: The study involved a total of 165 patients, in 37 to 40-weeks of gestation period, the research included antenatal women with a low amniotic fluid index, with any parity, gravidity, and 18-35 years of age. While Excluded patients with any medical disorders during pregnancy (e.g., PIH, anemia, cardiac disease etc.), and those with gestational period <37 weeks from the study. Thorough history, clinical examination and ultrasound were carried out of all the women included in the study from OPD and emergency department, to confirm a low amniotic fluid index. Patient follow-up was extended to their arrival in the Obstetric suite during established labor, APGAR scores were calculated and recorded at birth, and at the 5-minute of birth for the neonate. Adverse Perinatal Outcome was considered positive if the APGAR Score was <7/10 at five minutes of life of neonate. Data analysis was performed using SPSS 23. Results: Out of 165 patients 57% of the patients were induced while 43% spontaneously delivered, similarly 66.7% were delivered vaginally while 33.3% were delivered via C Section. Low neonatal APGAR score was recorded in 67.9% patients which is a significant percentage, hence our study results showed positive correlation of low AFI with adverse perinatal outcome. We also observed that probability of satisfactory values of AFI is 1.5 times more in spontaneous deliveries (p=0.04, OR=1.5), however no such relation exists for period of gestation or number of parity. Similarly, there is a significant relation of mode of delivery with satisfactory values of AFI (p=0.00), however no such relation exists for period of gestation or number of parity. However, the probability of vaginal deliveries is 1.6 times more with an increased in number of para (p=0.02, OR=1.6). Conclusion: Reduced amniotic fluid index is linked with significant Unfavorable Perinatal Outcomes proved by low APGAR score (<7/10 at five minutes).