title: Low-dose aspirin treatment improves ovarian responsiveness, uterine and ovarian blood flow velocity, implantation, and pregnancy rates in patients undergoing in vitro fertilization: a prospective, randomized, double-blind placebo-controlled assay.
abstract: OBJECTIVE
  To determine the effects of low-dose aspirin on ovarian response, uterine and ovarian blood flow velocity, and implantation and pregnancy rates in patients undergoing IVF.
  
  
  METHODS
  Prospective, randomized, double-blind placebo-controlled assay.
  
  
  METHODS
  Department of Reproductive Medicine, CER Medical Institute, Buenos Aires, Argentina.
  
  
  METHODS
  Two hundred ninety-eight infertile patients (mean [+/- SDI age, 35.6+/-4.09 years) undergoing IVF cycles.
  
  
  METHODS
  In the treatment group, 149 patients underwent controlled ovarian hyperstimulation and received a daily dose of 100 mg of aspirin. In the control group, 149 patients underwent controlled ovarian hyperstimulation in association with placebo.
  
  
  METHODS
  Number of follicles, number of oocytes retrieved, serum E2 levels, uterine and ovarian pulsatility index, cancellation rate, number of embryos transferred, and implantation and pregnancy rates.
  
  
  RESULTS
  There were statistically significant differences between the treatment group and the control group, respectively, in the number of follicles (19.8+/-7.2 versus 10.2+/-5.3), number of oocytes retrieved (16.2+/-6.7 versus 8.6+/-4.6), serum E2 levels (2,923.8+/-1,023.4 versus 1,614.3+/-791.7 pg/mL), uterine pulsatility index (1.22+/-0.34 versus 1.96+/-0.58), ovarian pulsatility index (1.18+/-0.31 versus 1.99+/-0.56), pregnancy rate (45% versus 28%), and implantation rate (17.8% versus 9.2%).
  
  
  CONCLUSIONS
  Low-dose aspirin treatment significantly improves ovarian responsiveness, uterine and ovarian blood flow velocity, and implantation and pregnancy rates in IVF patients.
authors.affiliation: Department of Reproductive Medicine, CER Medical Institute, Buenos Aires, Argentina.
authors.forename: M
authors.initials: M
authors.lastname: Rubinstein
authors.forename: A
authors.initials: A
authors.lastname: Marazzi
authors.forename: E
authors.initials: E
authors.lastname: Polak de Fried
mesh_terms: D000328:Adult; D001241:Aspirin / Q000008:administration & dosage / Q000627:therapeutic use*; D001783:Blood Flow Velocity / Q000187:drug effects; D004311:Double-Blind Method; D010064:Embryo Implantation / Q000187:drug effects*; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D010053:Ovary / Q000098:blood supply* / Q000000981:diagnostic imaging / Q000187:drug effects*; D011247:Pregnancy; D018873:Pregnancy Rate; D011446:Prospective Studies; D016896:Treatment Outcome; D018608:Ultrasonography, Doppler; D014599:Uterus / Q000098:blood supply* / Q000000981:diagnostic imaging / Q000187:drug effects*
chemical_list: D001241:Aspirin