1ZUBAIDA MASOOD, 2ZIAUL HASAN, 1YASMEEN NOMAN

ABSTRACT

Material & Methods: The purpose of this study was to determine association between the patterns of placental migration and the peripartum complications. It was a comparative cross sectional study at Gynae unit 3 and Radiology dept, Abbasi Shaheed Hospital, Karachi from September 2008 to June 2011.We evaluated 109 cases of placenta previa, diagnosed by prenatal anomaly scan performed between 20 and 28 weeks' gestation. They were followed by sonography at 32 and 36 weeks. Patients were divided into 3 groups depending on the distance of internal cervical os from the placenta. Group (1) Placenta overlapping or reaching over the cervical os (2) 0.1 to 2.9 cm from int. cervical os (3) 3 to 4.9cm from int. cervical os. A pattern of placental migration was classified as one with acceleration or deceleration of the placental migration in the late third trimester based on a comparison between the migration rates at 28 to 32 and 32 to 36 weeks' gestation.
Results: At the time of delivery, 20, 42, and 47 patients were included in groups 1, 2, and 3, respectively. Significantly higher rates of emergency cesarean section, elective cesarean section, manual placenta removal, and placenta accreta, were associated with a placental distance of less than 2.0 cm away from the cervix and a deceleration pattern of placental migration. While vaginal delivery was associated with a placental distance of 2.0 cm or greater away from the cervix and an acceleration pattern of placental migration.
Conclusions: Incidence of peripartum complications was increased with slow rate of placental migration and distance of placenta less than 2.0 cm from the internal cervical os.

For Full text contact to:
Prof. Dr. Farah Mansuri
editor@annals-ashkmdc.org

1 Department of Obstetrics & Gyneacology, KMDC & Abbasi Shaheed Hospital, Karachi.
2 Department of Radiology, Abbasi Shaheed Hospital, Karachi.