Transvaginal versus Transperineal Ultrasound Examination in Diagnosis of Placenta Previa in Late Pregnancy

Abstract

P lacentapreviaexistswhentheplacentaisinsertedwhollyorinpartintothelowersegmentoftheuterus(RCOG: Green-topGuideline No.27., 2011). The type ofsonographyusedfordetectionofplacentapreviaistransabdominal,transvaginalandtransperineal(Ranietal.,2007). Theaimofthisworkwastodeterminetheaccuracyoftransperinealultrasoundversustransvaginalultrasoundinthediagnosisofplacentapreviainlatepregnancy. AndourResearchQuestionwas Doestransperinealsonographyhaveacomparablediagnosticaccuracyinwomenwithplacentapreviainthethirdtrimesterofpregnancy? We conducted a prospective comparative study at Ain Shams University Maternity Hospital at Ultrasound special care unit for the fetus using Medison sonoace R5 ultrasound machine with 7.9 MHz transvaginal probe for transvaginal scanning and 3.5 MHz transabdominal probe for transperineal scanning. 67 cases suspected to have placenta previa by trans-abdominal US were enrolled. In this analysis, the comparison between transperineal versus transvaginal US for having placenta previa diagnosis judged by intraoperative visualization. ThepatientswererecruitedfromAinShamsUniversityMat