Abstract
Objective To examine the outcome of in vitro fertilization according to the body mass index of infertile patients. Study design Between September 2003 and May 2005, 573 patients underwent 789 in vitro fertilization cycles or ICSI because of male factor, tubal factor, and unexplained infertility were retrospectively included from our IVF database. The patients were classified in four groups: BMI < 20 kg/m 2 (264 cycles), 20 ≤ BMI < 25 (394 cycles), 25 ≤ BMI < 30 (83 cycles), and BMI ≥ 30 (48 cycles). All patients had a long protocol for IVF with a combination of the GnRH agonist and recombinant FSH. Results All parameters of ovarian response were comparable except the total required r-FSH dose. This dose was statistically higher in the group of BMI ≥ 30 compared to the other groups ( p = 0.0003). All parameters of IVF outcome were comparable, including the cancellation rate, the implantation rate, and pregnancy rates. Conclusion Obese patients require a higher r-FSH dose to achieve follicular maturation than normal weight patients. Obesity does not affect negatively results of in vitro fertilization.
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