title: Office hysteroscopic tubal occlusion with siloxane intratubal devices (the Ovabloc method).
abstract: OBJECTIVE
  To study the results of the Ovabloc method for female sterilization used in an outpatient setting.
  
  
  METHODS
  A prospective longitudinal study at the Schieland Hospital of 411 patients who consented for the method for sterilization. For statistical analyses the x2 test is used for detection of differences between groups of patients. The life-table analysis is used for events during the follow-up period.
  
  
  RESULTS
  Our results reflect those done under strict clinical conditions. The majority of the events took place in the first 36 months on Ovabloc. Unplanned pregnancies were mainly due to misdiagnosis in X-ray images and to incomplete procedures.
  
  
  CONCLUSIONS
  The method failures are 3/1000 women in 12 months and 8/1000 women in 36 months. The follow-up should be extended to 12 months. The reversibility of the method remains questionable. The method should be offered to women with (relative) contraindications for laparoscopic sterilization such as severe obesity, extensive pelvic adhesions or anesthetic risks.
authors.affiliation: Department of Obstetrics and Gynaecology, Schieland Hospital, The Netherlands.
authors.forename: G
authors.initials: G
authors.lastname: van der Leij
authors.forename: F B
authors.initials: FB
authors.lastname: Lammes
mesh_terms: D000328:Adult; D000556:Ambulatory Surgical Procedures; D004724:Endoscopy / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015907:Hysteroscopy; D008137:Longitudinal Studies; D011446:Prospective Studies; D012833:Siloxanes; D013246:Sterilization, Tubal / Q000379:methods*; D013997:Time Factors; D016896:Treatment Outcome
chemical_list: D012833:Siloxanes