title: Cumulative pregnancy analysis of one-tube versus two-tube tubal anastomosis.
abstract: OBJECTIVE
  To determine the prognosis for pregnancy when tubal anastomosis can be performed on only one tube.
  
  
  METHODS
  Prospective collection of demographic and clinical data.
  
  
  METHODS
  University medical center.
  
  
  METHODS
  One hundred twenty-six women undergoing elective sterilization reversal.
  
  
  METHODS
  Sterilization reversal was performed by five reproductive endocrine surgeons. In 35 cases, only one tube could be treated surgically. In all cases, this was because of a previous salpingectomy or inadequate distal tubal segment.
  
  
  METHODS
  Cumulative probability of pregnancy in the two groups (one tube or two tubes) was analyzed by survival analysis and logistic regression. Survival curves were compared by log-rank testing.
  
  
  RESULTS
  Comparison of survival curves revealed no difference between the logistic regression curves for probability of conception after anastomosis of one tube versus two tubes. Logistic regression revealed a similar cumulative probability of conception with a two-tube (0.76) and a one-tube anastomosis (0.63). The monthly fecundity rates were 0.032 and 0.034 for a two-tube and one-tube anastomosis, respectively. There were no differences between the groups with respect to age, gravidity, or parity. Virtually all pregnancies occurred within 2 years of surgery.
  
  
  CONCLUSIONS
  The prognosis for conception after one-tube anastomosis was the same as for two-tube anastomosis.
authors.affiliation: Department of Obstetrics and Gynecology, University of Mississippi Medical Center, Jackson 39212-4505, USA. IVFDOC@ONG.UMSMED.EDU
authors.forename: J D
authors.initials: JD
authors.lastname: Isaacs
authors.forename: R A
authors.initials: RA
authors.lastname: Young
authors.forename: B D
authors.initials: BD
authors.lastname: Cowan
mesh_terms: D005187:Fallopian Tubes / Q000601:surgery; D005260:Female; D005306:Fertilization; D006801:Humans; D016015:Logistic Models; D011247:Pregnancy; D011446:Prospective Studies; D013243:Sterilization Reversal; D013246:Sterilization, Tubal / Q000379:methods