Complications of placenta previa: A retrospective observational study at tertiary care hospital

Abstract

: Placenta previa (PP) is condition where the placenta is inserted completely or partially into the lower uterine segment, at or after 28 weeks of gestation. Maternal and fetal risks are antepartum haemorrhage (APH), postpartum haemorrhage (PPH), abnormal adherence of placenta, low birth weight (LBW), intra uterine growth restriction (IUGR), preterm births and congenital malformations. The purpose of this study was to determine the proportion of placenta previa, the demographics of patients, types- severity, complications and the feto-maternal outcome in patients of placenta previa.: After due permission of Institutional Review Board, this retrospective observational study was carried out at tertiary care teaching hospital from July 2020 to November 2022.Proportion of pregnancies with placenta previa was 0.3%. Majority 44(91.7%) patients were registered, 38(79.2%) of patients were in age group of 21-30 years, 38(79.1%) patients were multigravida, 41 (85.4%) had major degree of placenta previa, 29(60.4%) patients admitted after 37 weeks of gestation and 47(97.9%) of patients were delivered by caesarean section. Majority of patients, 20 (41.7%) had mild anemia. Major complications were bleeding episodes during antenatal period/APH in 23 (47.9%) and PPH in 22 (45.8%) patients. Maternal mortality occurred in 1 (2.1%) patient. All babies were live at time of birth and 44(91.7%) babies were alive at the time of discharge and neonatal death occurred in 4 (8.3%) preterm babies (28-33 week gestation). Majority of patients were multigravida. No patient was severely anaemic. Majority of patients were delivered by CS. APH and PPH were major complications. About two third of patients required blood transfusion in ante/intra/post-natal period. Obstetric hysterectomy was required in about one tenth of patients. Majority of babies were alive at the time of discharge due to higher number of registered patients who took regular antenatal care, hospital delivery and good NICU facilities. Once diagnosed, placenta previa and morbidly adherent placenta should be managed at tertiary care centre with multidisciplinary approach so as to lessen the feto-maternal morbidity and mortality. Prevention is better than cure. Multiparity increases the risk of placenta previa. Hence, family planning with an aim to reduce unwanted pregnancies and abortions will help to reduce the chances placenta previa. CS increases the risk of development of placenta previa. Efforts should be made to reduce the primary caesarean section rate as it poses more risk of placenta previa, morbidly adherent placenta and its related complications in subsequent gestations.