Resolution of complete placenta previa: Does prior cesarean delivery matter?

Ann K. Lal, Jessica Nyholm, Joseph Wax, Carl H. Rose, William J. Watson

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Objectives - The purpose of this study was to prospectively assess the rate of resolution of complete placenta previa diagnosed at second-trimester sonography in patients with and without previous cesarean delivery. Methods - This prospective study evaluated patients at 3 institutions with complete placenta previa diagnosed at second-trimester screening sonography. All patients were followed with sonography every 4 to 6 weeks until either resolution of the previa or delivery occurred. Patients with persistent/nonresolving complete placenta previa underwent cesarean delivery. Results - A total of 67 patients were enrolled in the study; 18 patients had a prior cesarean delivery. Resolution of placenta previa occurred in 11 of 18 patients (61%) with a prior cesarean delivery, whereas 44 of 49 patients (90%) without a prior cesarean delivery had resolution of placenta previa (P = .012, Fisher exact test). Placental location per se (anterior or posterior) was not associated with resolution of placenta previa (P = .22). Complete placenta previa persisted to delivery in 5 of 9 patients (56%) with a prior cesarean delivery and an anterior placental location. Conclusions - This prospective study indicates that patients with a prior cesarean delivery and complete placenta previa diagnosed at second-trimester sonography are less likely to have subsequent resolution of the previa when compared to those without a history of cesarean delivery.

Original languageEnglish (US)
Pages (from-to)577-580
Number of pages4
JournalJournal of Ultrasound in Medicine
Volume31
Issue number4
DOIs
StatePublished - Apr 1 2012

Keywords

  • Cesarean delivery
  • Obstetrics
  • Placenta previa
  • Previa resolution
  • Sonography

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