RT Book, Section A1 Kathrins, Martin A1 Ghayda, Ramy Abou A1 Yanushpolsky, Elena A2 Bhasin, Shalender A2 O’Leary, Michael P. A2 Basaria, Shehzad S. SR Print(0) ID 1174515939 T1 Assisted Reproductive Technologies for Male Infertility T2 Essentials of Men’s Health YR 2021 FD 2021 PB McGraw Hill PP New York, NY SN 9781260135886 LK accessmedicine.mhmedical.com/content.aspx?aid=1174515939 RD 2024/04/18 AB Infertility is defined as the inability of the couple to achieve a successful pregnancy after 12 months of unprotected intercourse if the woman is under age 35, or after 6 months of unprotected intercourse if a female partner is greater than 35 years old. Infertility affects close to 15% of all couples trying to conceive a pregnancy. In 20% to 30% of such couples, infertility can be clearly identified as due to female causes, and in 20% to 30% of cases infertility can be clearly attributed to male-factor problems. The remaining cases are classified as “unexplained,” where no specific abnormalities can be identified in either of the partners.