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Unexplained infertility: An approach to diagnosis and management

The cause of infertility is said to be unexplained when there is normal ovulatory function, semen analysis is normal, and tubal patency is established by hysterosalpingography or laparoscopy. Some of the factors that may contribute to the etiology of unexplained infertility are inability to identify the subtle reproductive abnormalities, endocrine/genetic/immunological disorders, minimal/mild endometriosis, and compromised ovarian and natural fecundability that may be less than normal. Prognostic factors in unexplained infertility include maternal age, duration of infertility, and previous obstetric history. The management options depend on various factors such as age of woman, duration of infertility, couples′ preferences, and the health-care setting. The options available for treatment include expectant management, clomiphene citrate, super ovulation with intrauterine insemination, and in vitro fertilization/intracytoplasmic sperm injection.