Temporary reappearance of sperm 12 months after vasectomy clearance
| Autor: | P. Ashwin, I. Z. Mackenzie, David Cranston, T.S. O'brien, John Guillebaud, Eileen Turner |
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| Rok vydání: | 1995 |
| Předmět: |
Male
endocrine system medicine.medical_specialty Urology Population Semen Semen analysis urologic and male genital diseases Vasectomy medicine Humans Postoperative Period Prospective Studies education Gynecology Azoospermia education.field_of_study Sperm Count medicine.diagnostic_test urogenital system business.industry Incidence (epidemiology) medicine.disease Spermatozoa Sperm Pregnancy rate business |
| Zdroj: | British Journal of Urology. 76:371-379 |
| ISSN: | 1464-410X 0007-1331 |
| Popis: | Objectives To determine the incidence of positive semen analysis 12 months after vasectomy clearance. Subjects and methods A prospective study was undertaken, starting in 1990, of men undergoing vasectomy. Azoospermia was confirmed by two successive semen analyses 16 weeks after vasectomy. One year later a further sample was analysed for the presence of sperm. Results Of 1000 men who provided a sample for analysis, six men (0.6%) have had positive semen analyses 1 year after the initial tests showed azoospermia. In all six the sperm count was < 10 000 per mL. Five of the six men produced a repeat sample 1 month later which, in all five cases, showed azoospermia. No pregnancies have been reported to date. Conclusion Transitory reappearance of sperm following successful vasectomy occurs in about 0.6% of men. This incidence is 18 times greater than the reported pregnancy rate following successful vasectomy. |
| Databáze: | OpenAIRE |
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