Use and success of In Vitro Fertilization following Restorative Proctocolectomy and Ileal Pouch-Anal Anastomosis. A nationwide 17-year cohort study.

Background and Aims: Fertility decreases in women following restorative proctocolectomy for ulcerative colitis. The use and success of in vitro fertilisation [IVF] after restorative proctocolectomy for ulcerative colitis is not systematically studied. We aimed to estimate the use and success of in vitro fertilisation treatment in female ulcerative colitis patients, with and without restorative proctocolectomy. Methods: Women of fertile age [15-49 years] with restorative proctocolectomy for ulcerative colitis were compared with females with ulcerative colitis without restorative proctocolectomy. Data from the IVF registry from 1994-2010 were cross-linked with data from the National Danish Patient Registry and the Medical Birth Registry. Results: In vitro fertilisation is significantly more frequent in females with restorative proctocolectomy compared with females without restorative proctocolectomy, adjusted hazard ratio 3.2, 95% confidence interval [CI] [2.5;4.0]. The odds for having a live birth after in vitro fertilisation are no different in females with restorative proctocolectomy compared with females without restorative proctocolectomy, adjusted odds ratio 0.8, 95% CI [0.6;1.1]. The percentage of children born as a result of in vitro fertilisation is significantly higher in females with restorative proctocolectomy compared with females without restorative proctocolectomy (31.0%, 95% CI [24.1; 37.7] vs 5.0%, 95% CI [4.4; 5.6]). Conclusions: Females with restorative proctocolectomy for ulcerative colitis have increased incidence of in vitro fertilisation by more than a factor three, the odds that a treatment results in a live birth are similar and six times more children are born as a result of in vitro fertilisation compared with females without restorative proctocolectomy.