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  • Title: Should cryopreserved epididymal or testicular sperm be recovered from obstructive azoospermic men for ICSI?
    Author: Griffiths M, Kennedy CR, Rai J, Wilson L, Blacklock AR, Keay SD.
    Journal: BJOG; 2004 Nov; 111(11):1289-93. PubMed ID: 15521877.
    Abstract:
    OBJECTIVE: To determine the effect of the anatomical site of sperm recovery on intracytoplasmic sperm injection (ICSI) embryo implantation, pregnancy and live birth rates in couples with isolated obstructive azoospermia as the sole cause of infertility. DESIGN: Controlled, single centre, retrospective clinical study. SETTING: University Hospital, Centre for Reproductive Medicine. SAMPLE: One hundred and fifty-one cycles of ICSI were performed, using surgically recovered sperm, between August 1996 and March 2002. METHODS: The outcome of ICSI, with surgically recovered sperm, was compared between epididymal (Group E) and testicular (Group T) derived sperm. Inclusion was limited to couples undergoing their first treatment cycle, where female age was < or =39 years and a minimum of five oocytes were available for injection. Women with a history of ovarian surgery, ultrasonic evidence of polycystic ovaries, uterine anomalies or hydrosalpinx were excluded. MAIN OUTCOME MEASURES: Clinical pregnancy, implantation and live birth rate. RESULTS: Forty-two of 151 cycles met the strict inclusion criteria. Groups E and T were comparable with respect to age, basal serum FSH, ovarian response; number of oocytes injected and number of embryos available and transferred. No difference existed between Groups E and T in implantation, clinical pregnancy or live birth rate (28.8% vs 25.8%, 42.9% vs 42.9% and 39.3% vs 42.9%, respectively). CONCLUSIONS: Cryopreserved epididymal and testicular sperm, from men with obstructive azoospermia, appear equally effective in ICSI. Epididymal recovery should remain the method of first choice for obstructive azoospermic men but further study of sperm DNA damage rates in different testicular sites is required.
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