Placental Weight Birth Weight Ratio, in Patients with Placenta Previa: A 2 Year Study in MTI Lady Reading Hospital Peshawar
DOI:
https://doi.org/10.52206/jsmc.2024.14.3.858Abstract
Background: Placenta previa owing to abnormal location in lower uterine segment has serious maternal and fetal consequences.
Objectives: To review the placenta weight birth weight ratio (PWBW ratio) and determine an association between PWBW ratio and
gestational age in patients with placenta previa.
Materials and Methods: The Descriptive Cross sectional study took place in Gynae A unit, Medical Teaching Institute, Lady Reading Hospital, Peshawar, Pakistan, from 01-03- 2018 to 29-02- 2020.Patients with genital tract bleeding were admitted through out patient department and Emergency after 28 weeks of gestation. Diagnosis of placenta previa was confirmed and were included
in study after taking consent.
Results: Total of 173 patients with placenta previa were admitted in gynae A. Patients with major placenta previa were 151 (87.2%) while 22 (12.7%) patients had minor placenta previa. Birth weight placental weight ratio was calculated by measuring weight of placenta and baby after the delivery. Most of the patients, 92 (53.2%) had PWBW ratio less than 1:6 (relatively large placenta), patients with BWPW ratio of 1:6 (normal ratio) were 14 (8.1%) and 67 (38.7%) patients had PWBW ratio of 1:6 (relatively smaller
placenta).
Conclusion: Patients with placenta previa have relatively larger placenta (PWBW ratio less than 1:6) to compensate for lesser vasculature of lower uterine segment. Patients with larger placenta are prone to necrosis and abruption. Vigilant antenatal care is needed in these patients due to higher incidence of antepartum and postpartum hemorrhage, as well as invasive propensity of
lager placenta.
Keywords: Placenta Previa, Placental weight birth weight ratio, Placental efficiency
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