The association of placental to fetal ratio with pregnancy duration

This original research paper investigated the connection between the placental to fetal volume ratio at 27 weeks gestation and the timing of spontaneous delivery. Using magnetic resonance imaging (MRI) to measure volumes in a small cohort of pregnancies, the study found that a higher placental to fetal ratio at this stage was significantly linked to a longer remaining duration of pregnancy. While larger placental size also showed a weaker association with a longer pregnancy, fetal size itself did not appear to be a significant predictor of the time until spontaneous labor. The authors suggest that this ratio might serve as a better indicator of pregnancy maturity than just fetal size.

https://obgyn.onlinelibrary.wiley.com/toc/16000412/0/0