title: Comparison of complication rates and pain scores after transvaginal ultrasound-guided oocyte pickup procedures for in vitro maturation and in vitro fertilization cycles.
abstract: OBJECTIVE
  To compare complication rates and pain scores after oocyte pickup (OPU) in in vitro maturation (IVM) and IVF cycles.
  
  
  METHODS
  Retrospective cohort study.
  
  
  METHODS
  University-affiliated ART center.
  
  
  METHODS
  One hundred eighty-eight IVM and 188 IVF OPUs.
  
  
  METHODS
  IVM OPUs were done using a 19-gauge single-lumen needle, and IVF OPUs were done using a 17-gauge single- or 16-gauge double-lumen needles.
  
  
  METHODS
  Duration of OPU, complication rates, and pain scores during the OPU procedure.
  
  
  RESULTS
  IVM OPU took significantly more time than IVF OPU (22 vs. 15 minutes). Two women in the IVM and four in the IVF group experienced bleeding from the vaginal wall or ovary. None of them required hospitalization, transfusion, or an operative intervention. One patient in each group had pelvic infection. Severe post-OPU abdominal pain occurred in one patient in the IVM group and five patients in the IVF group. No differences were found between pain scores in the IVF and IVM groups (3.4 vs. 3.8).
  
  
  CONCLUSIONS
  Although IVM OPU requires more punctures per ovary, it is well tolerated and does not seem to be associated with a higher complication rate than IVF OPU.
authors.affiliation: McGill University Health Centre Reproductive Centre, Royal Victoria Hospital, Montreal, Quebec, Canada.
authors.forename: Ayse
authors.initials: A
authors.lastname: Seyhan
authors.affiliation: McGill University Health Centre Reproductive Centre, Royal Victoria Hospital, Montreal, Quebec, Canada; Assisted Reproduction Unit, Uludag University School of Medicine, Bursa, Turkey. Electronic address: barisata@hotmail.com.
authors.forename: Baris
authors.initials: B
authors.lastname: Ata
authors.affiliation: McGill University Health Centre Reproductive Centre, Royal Victoria Hospital, Montreal, Quebec, Canada.
authors.forename: Weon-Young
authors.initials: WY
authors.lastname: Son
authors.affiliation: McGill University Health Centre Reproductive Centre, Royal Victoria Hospital, Montreal, Quebec, Canada.
authors.forename: Michael H
authors.initials: MH
authors.lastname: Dahan
authors.affiliation: McGill University Health Centre Reproductive Centre, Royal Victoria Hospital, Montreal, Quebec, Canada.
authors.forename: Seang Lin
authors.initials: SL
authors.lastname: Tan
mesh_terms: D000328:Adult; D015331:Cohort Studies; D005260:Female; D005307:Fertilization in Vitro / Q000009:adverse effects / Q000379:methods*; D006801:Humans; D059471:In Vitro Oocyte Maturation Techniques / Q000379:methods*; D054315:Oocyte Retrieval / Q000009:adverse effects / Q000379:methods*; D010147:Pain Measurement / Q000379:methods*; D011183:Postoperative Complications / Q000175:diagnosis / Q000453:epidemiology* / Q000473:pathology; D012189:Retrospective Studies; D018084:Ultrasonography, Interventional / Q000009:adverse effects / Q000379:methods*; D014621:Vagina / Q000000981:diagnostic imaging
keywords: Assisted reproduction; complication; in vitro fertilization; in vitro maturation; oocyte collection; oocyte pickup