title: Influence of Donor, Recipient, and Male Partner Body Mass index on Pregnancy Rates in Oocyte Donation Cycles.
abstract: OBJECTIVE
  A high body mass index (BMI) has been shown to associate with negative reproductive outcomes. Women with high BMI have in general lower chances of getting pregnant as well as higher risk of pregnancy complications. Several studies have described in the past the relationship between high BMI and the pregnancy outcome, however, some of them have a small sample size or fail to control for variables associated with a diminished probability of pregnancy. In the present study, we aim to analyze the role of the BMI of all parties involved in oocyte donation cycles (that is: the oocyte donor, the recipient woman, and the male partner) on pregnancy outcomes.
  
  
  METHODS
  This study includes 1092 oocyte donation cycles. Inclusion criteria were: fertilization by ICSI, frozen semen, transfer of 2 embryos at day 3 of in vitro development. For statistical analysis, BMI was divided in: low weight (<20 kg/m2), normal (20-24 kg/m2), overweight (25-29 kg/m2) and obesity (≥30 kg/m2). Quantitative and categorical variables were assessed by squared-Chi test and one-way ANOVA. The association between the BMI (recipient, oocyte donor and partner) and pregnancy rate was assessed by multivariate logistic regression.
  
  
  RESULTS
  Laboratory outcomes and pregnancy rates do not differ among the different BMI categories of recipient, oocyte donor or partner. After adjusted analyses (for oocyte donor age, for laboratory outcomes and for age and BMI of all the parties for pregnancy outcomes), no difference was found either.
  
  
  CONCLUSIONS
  In oocyte donation cycles, where donors BMI is by law mandated to be in the 18-30 range, the pregnancy rate of the oocyte recipient does not seem to be affected by the BMI of any of the parties involved.
authors.affiliation: Clínica EUGIN, Bogotá, Colombia.
authors.forename: Carolina
authors.initials: C
authors.lastname: Rubio
authors.affiliation: Clínica EUGIN, Barcelona 08029, Spain.
authors.forename: Rita
authors.initials: R
authors.lastname: Vassena
authors.affiliation: Fundació Privada EUGIN, Barcelona 08029, Spain.
authors.forename: Désirée
authors.initials: D
authors.lastname: García
authors.affiliation: Clínica EUGIN, Barcelona 08029, Spain.|Fundació Privada EUGIN, Barcelona 08029, Spain.
authors.forename: Valérie
authors.initials: V
authors.lastname: Vernaeve
authors.affiliation: Clínica EUGIN, Bogotá, Colombia.
authors.forename: José Ignacio
authors.initials: JI
authors.lastname: Madero
keywords: Body mass index; Embryo quality; Female obesity; In vitro fertilization; Intracytoplasmic sperm injection; Male obesity