Lucy Lucet F van der Voet1, Tobias Limperg2, Sebastiaan Veersema3, Anne Timmermans4, A Marjolein J Bij de Vaate5, Hans A M Brölmann5, Judith A F Huirne5. 1. Department of Obstetrics and Gynecology, Deventer Hospital, Deventer, The Netherlands. Electronic address: l.f.vandervoet@dz.nl. 2. Department of Obstetrics and Gynecology, University of Missouri-Kansas City School of Medicine, Kansas City, MO, United States. 3. Department of Obstetrics and Gynecology, Sint Antonius Hospital Nieuwegein, The Netherlands; Departement of Reproductive Medicine & Gynecology, University Medical Center, Utrecht,The Netherlands. 4. Department of Obstetrics and Gynecology, Academic Medical Center Amsterdam, The Netherlands. 5. Department of Obstetrics and Gynecology, VU Medical Center Amsterdam, The Netherlands.
Abstract
OBJECTIVE: To study the prevalence of hysteroscopically evaluated disruptions of the integrity of the uterine wall ('niches') in women with and without a previous cesarean section. STUDY DESIGN: A prospective cohort study was performed in a teaching hospital in the Netherlands. Women seeking hysteroscopic sterilization were included. A hysteroscopic evaluation of the anterior wall of the uterus and cervix to identify the existence of disruptions (niches) was performed in a standard manner. Primary outcome was the presence of a uterine niche, defined as any visible defect, disruption, or concavity (gap) in the anterior wall. Secondary outcome was to develop a registration form of niche features for hysteroscopic evaluation. RESULTS: In total, 713 women were included, 603 without and 110 with a previous cesarean section. In women with a previous cesarean Section 83 (75%) niches were observed using hysteroscopy. Anterior wall disruptions were not observed in women without a cesarean section. The following niche features were identified and incorporated in a registration form: polyps, cysts, myometrium defect, fibrotic tissue, (abnormal) vascular pattern, lateral branches, mucus production inside the defect, and bleeding. CONCLUSION: In a prospective cohort study among women undergoing hysteroscopic sterilization, a uterine niche could be detected by hysteroscopy in 75% of women with a previous cesarean section.
OBJECTIVE: To study the prevalence of hysteroscopically evaluated disruptions of the integrity of the uterine wall ('niches') in women with and without a previous cesarean section. STUDY DESIGN: A prospective cohort study was performed in a teaching hospital in the Netherlands. Women seeking hysteroscopic sterilization were included. A hysteroscopic evaluation of the anterior wall of the uterus and cervix to identify the existence of disruptions (niches) was performed in a standard manner. Primary outcome was the presence of a uterine niche, defined as any visible defect, disruption, or concavity (gap) in the anterior wall. Secondary outcome was to develop a registration form of niche features for hysteroscopic evaluation. RESULTS: In total, 713 women were included, 603 without and 110 with a previous cesarean section. In women with a previous cesarean Section 83 (75%) niches were observed using hysteroscopy. Anterior wall disruptions were not observed in women without a cesarean section. The following niche features were identified and incorporated in a registration form: polyps, cysts, myometrium defect, fibrotic tissue, (abnormal) vascular pattern, lateral branches, mucus production inside the defect, and bleeding. CONCLUSION: In a prospective cohort study among women undergoing hysteroscopic sterilization, a uterine niche could be detected by hysteroscopy in 75% of women with a previous cesarean section.