Oligohydramnios at term in the high-risk population – how severe is severe?

Author:

Pekar-Zlotin Marina12,Hirsh Nimrod12,Melcer Yaakov12,Wiener Yifat12,Kugler Nadav12,Zilberman Sharon Nataly12,Maymon Ron12

Affiliation:

1. Obstetrics and Gynecology Department , “Shamir” (“Assaf Harofeh”) Medical Center , Tzrifin , Israel

2. School of Medicine, Faculty of Medical and Health Sciences , Tel Aviv University , Tel Aviv , Israel

Abstract

Abstract Objectives The term oligohydramnios is linked to pregnancy complications. We previously presented the outcome of the low-risk population (no pregnancy complications) with term oligohydramnios. This study aims to address the high-risk group (Any maternal complication during pregnancy, such as gestational diabetes, pre-gestational diabetes, chronic hypertension, preeclampsia, anemia, asthma, obesity, and multi parity.) Methods This retrospective cohort study of 1,114 singleton term (≥37), oligohydramnios (AFI <50 mm) pregnancies from Shamir Medical Center between 2017 and 2021. Compering the low-risk to high-risk groups with subdivision by severity of oligohydramnios. Results A total of 211 subjects (19 %) were high-risk cases and 903 (81 %) low-risk cases. Comparing these two groups, subjects of the high-risk group were older (31.34 ± 5.85 vs. 29.51 vs. 4.96), had earlier gestational age at delivery 39.53 ± 1.18 vs. 40, had higher mean AFI (35 ± 12.7 vs. 33 ± 14.5), were subject to more labor inductions (81 vs. 69.7 %), and CS rate (19.9 vs. 12.4 %). Logistic regression revealed a need for more cesarean sections in the high-risk group. Additionally, more labor inductions and a higher risk of negative fetal outcomes. Conclusions This study highlights the importance of considering pregnancy risk factors when we are approaching oligohydramnios in high-risk pregnancies.

Publisher

Walter de Gruyter GmbH

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