There were no differences in clinical outcomes associated with IVF versus ICSI in the treatment of unexplained infertility.

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The records of 191 patients involved in 316 treatment cycles over 3 years in an in vitro fertilization-embryo transfer program were reviewed. Follicular aspiration, oocyte retrieval, pregnancy rates, technical difficulty, and complications were compared in four oocyte retrieval methods: 117 laparoscopic retrievals, 116 ultrasound (US)-guided percutaneous transvesical retrievals, 43 US-guided transvaginal retrievals, and 40 combined US and laparoscopic retrievals. The mean number of aspirated follicles (9.14) was greatest in the transvaginal retrieval group, but the ratio of oocytes to punctured follicles was not statistically greater in any of the groups. The overall clinical pregnancy rate per cycle was highest in the transvaginal retrieval group: 12 of 43 cycles resulted in pregnancy, or 27.9%. The number of delivered babies (16.3%) was also highest in the transvaginal retrieval group. US-guided transvaginal oocyte retrieval is recommended as the method of choice.