As OB healthcare providers, we have several pieces of guidance regarding determination of amniotic fluid volume antepartum. The SMFM has Consult Series #46 (2018), which describes the management of polyhydramnios. We'll touch on that in this episode. However, while we have clear understanding of the increased risks of oligohydramnios, where an MVP is preferred for diagnosis over AFI, we have less information about polyhydramnios. But a new study published in BJOG (January 2026) provides more insights on this. While MVP is preferred for oligo diagnosis, can the same be said for polyhydramnios? Is there an increased risk in perinatal morbidity with polyhydramnios, and is that better detected by MVP or AFI? This new study findings left the authors unsatisfied although it CONFIRMED what we have covered in past episodes. Listen in for details.

1. Dashe, Jodi S. et al. SMFM Consult Series #46: Evaluation and management of polyhydramnios. American Journal of Obstetrics & Gynecology, Volume 219, Issue 4, B2 - B8 (2018)

2. ACOG PB 229: Antepartum Fetal Surveillance (2021)

3. Petrecca A, Chauhan SP, Tersigni C, Ghi T, Berghella V. Amniotic Fluid Index Versus Maximum Vertical Pocket Versus Both for Polyhydramnios. BJOG. 2026 Jan 7. doi: 10.1111/1471-0528.70139. Epub ahead of print. PMID: 41502220.