The effect of placenta previa on fetal weight and feto-maternal blood flow: a prospective cohort study

Abstract

Background: The current study aims to evaluate the effect of placenta previa on the fetal weight and to explore its effect on the uterine and umbilical arteries blood flow.Methods: The current study was a prospective cohort study conducted at Assiut Women’s Health Hospital, Egypt from 1st of October 2016 to 30th of September 2017 including placenta previa and non-placenta previa women. They were followed up by two-dimensional ultrasound and Doppler blood flow in the uterine and umbilical arteries. The main study outcome was the number of low birth weight (LBW) babies delivered at or beyond 37 weeks and blood flow changes in uterine and umbilical arteries.Results: Two hundred twelve women were divided into two groups; group I included 106 placenta previa women (PP group) and 106 non-placenta previa women (NPP group). The number of LBW babies were comparable in both groups without statistically significant difference (P value= 0.555). Neither; uterine artery nor umbilical artery blood flow had any significant differences between the groups. Preterm delivery was significantly higher in the PP group (p value=0.000).Conclusions: Although there is no agreement, in the literature, on the association between placenta previa and LBW, authors suggest that placenta previa is not a reason for LBW babies. In addition, placenta previa shows no effect on uterine artery or umbilical artery blood flow.

The association between Hb levels in placenta previa patients with apgar scores

“…In addition to occurring after a cesarean section, placenta previa can cause severe bleeding during pregnancy (Takeda et al, 2020). The main complication that causes heavy and fatal bleeding due to placenta previa is placenta accreta, which occurs when the placenta is located in the lower a hysterectomy (Ali et al, 2018;Garmi & Salim, 2012).…”

“…Placenta previa can cause significant bleeding during pregnancy and after cesarean delivery (Swarup & Anand, 2021). The primary placenta previa complication that causes heavy and fatal bleeding and necessitates hysterectomy is placenta accreta (Rajuddin et al, 2019), which develops when the placenta is in the lower uterine segment and causes trophoblast tissue to invade the myometrium and then the perimetrium (Ali et al, 2018). Reduced placental vascularity is another factor that could affect how often placenta previa occurs (Jansen et al, 2020).…”

The Association Between Hb Levels and Placenta Previa in Gravida Patients

“…(Takeda et al, 2020). The main complication that causes heavy and fatal bleeding due to placenta previa is the occurrence of placenta accreta due to the placenta being located in the lower uterine segment and causing trophoblast tissue to invade into the myometrium and then to the perimetrium and require a hysterectomy (Ali et al, 2018;Garmi & Salim, 2012).…”

“…The main placenta previa complication that causes heavy and fatal bleeding and necessitates hysterectomy is placenta accreta (Rajuddin et al, 2019), which develops when the placenta is in the lower uterine segment and causes trophoblast tissue to invade the myometrium and then the perimetrium. (Ali et al, 2018). Reduced placental vascularity is another factor that could affect how often placenta previa occurs (Jansen et al, 2020).…”