The outcome of assisted reproductive technology (ART) program in different season

Abstract

The present report was to investigate the pregnancy rate of the infertile couples in different season after conventional in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI). Pregnancy rates were oomparcd in differenl season (winter, spring, summer and autumn) of the 412 cycles after following the ART programs in our clinic during Scpteinhcr 1995 to August 1996. IVF was done hy standard protocol, and ICSI was performed for cases of male factor infertility or history of failed fertilization after IVF. Data of clinical pregnancy were suhjccted to two groups:a). wives aged less than 35 years old, 253 cycles and b). wives aged more than 35 years old, 159 cycles. The pregnancy rates of non aged a nd aged patients were lowest in winter (1R/5R, 31% and 6/33, 1R%), incrc;tsing in spring (22i56. 39% and 10/44, 23%), reaching maximum in summer (31/73, 42':1: and lli45 , 24%), and again decreased in autumn (27/66, 41% and R/37, 22%). Howc,•cr. they \nrc no statistical different among the season. The results showed the tendency of decreased the pregnancy rate in the winter and increased in the summer in the infertile patients after following ART programs.