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Decision process prior to vasectomyEdit
There are some variations on the procedure such as no-scalpel (keyhole) vasectomies, in which a sharp hemostat, rather than a scalpel, is used to puncture the scrotum. Another type of vasectomy which may reduce the risk of chronic pain is called an "open ended" vasectomy. A "normal" vasectomy typically seals both ends of the vas deferens with stitches, heat, metal clamps or a combination, after cutting. The open-ended vasectomy obstructs only the top end of the vas deferens. With this method sperm leaks out from the lower severed end of the vas deferens and into the scrotum, thus hopefully avoiding a build-up of pressure in the epididymis. The likelihood of long-term testicular pain from "backup pressure" seems to be reduced using this method.
After vasectomy, the testes remain in the scrotum where Leydig cells continue to produce testosterone and other male hormones that continue to be secreted into the blood stream. Some studies find that sexual desire is unaffected in over 90% of vasectomized men, whereas other studies find higher rates of diminished sexual desire. The sperm-filled fluid from the testes contributes about 10% to the volume of an ejaculation (in men who are not vasectomized) and does not significantly affect the appearance, taste, texture, or smell of the ejaculate.
When the vasectomy is complete, sperm can no longer exit the body through the penis. The testicles continue to produce sperm, but they are broken down and absorbed by the body. Much fluid content is absorbed by membranes in the epididymis, and much solid content is broken down by the responding macrophages and re-absorbed via the blood stream. Sperm is matured in the epididymis for about a month once it leaves the testicles. Approximately 50% of the sperm produced never make it to the orgasmic stage in a non-vasectomized man. After vasectomy, the membranes increase in size to absorb and store more fluid; this triggering of the immune system causes more macrophages to be recruited to break down and re-absorb more of the solid content. Within one year after a vasectomy, sixty to seventy percent of vasectomized men develop antisperm antibodies. In some cases, vasitis nodosa, a benign proliferation of the ductular epithelium, can also result. The buildup of sperm increases pressure in the vas deferens and epididymis. To prevent damage to the testes, these structures eventually rupture in more than half the cases.[How to reference and link to summary or text] The entry of the sperm into the scrotum causes sperm granulomas to be formed by the body to contain and absorb the sperm which the body treats as a foreign substance.
Early failure rates, i.e. pregnancy within a few months after vasectomy, are below 1%, but the effectiveness of the operation and rates of complications vary with the level of experience of the surgeon performing the operation and the surgical technique used.
Although late failure, i.e. pregnancy after recanalization of the vasa deferentia, is very rare, it has been documented.
Worldwide, approximately 6% of married women using contraception rely on vasectomy.
Compared to tubal ligationsEdit
The rate of vasectomies compared to tubal ligations worldwide is extremely variable among countries, and the statistics are mostly based on questionnaire studies rather than actual counts of procedures performed. Worldwide, approximately five times as many married women rely on female sterilization as those relying on male sterilization. In the U.S. about 3 times as many women at risk for unintended pregnancy rely on tubal ligation as on vasectomy. In the U.S. tubal ligation is used more frequently than vasectomy, although the proportions vary from state to state. In Britain, vasectomy is more popular than tubal ligation, though this statistic may be as a result of the data-gathering method.[How to reference and link to summary or text]
Couples who opt for tubal ligation do so for a number of reasons, including:
- Convenience of coupling the procedure with giving birth at a hospital.
- Fear of side effects in the man.
- Fear of surgery in the man.
Couples who choose vasectomy are motivated by, among other factors:
- The lower cost of vasectomy
- The simplicity of the surgical procedure
- The lower mortality of vasectomy (for example 0.1 per 100,000 vasectomies vs. 4 per 100,000 tubal ligations in industrialized nations)
- Fear of side effects in the woman
- Fear of "major" surgery in the woman
Animal and human data indicate that vasectomy does not increase atherosclerosis and that increases in circulating immune complexes after vasectomy are transient. Furthermore, the weight of the evidence regarding prostate and testicular cancer suggests that men with vasectomy are not at increased risk of these cancers.
Post-Vasectomy Pain SyndromeEdit
Post-Vasectomy Pain Syndrome (PVPS), genital pain of varying intensity that may last for a lifetime, is estimated to appear in between 5% and 35% of vasectomized men, depending on the severity of pain that qualifies for the particular study The pain can be orchialgia, pain with intercourse, ejaculation, or physical exertion, or tender epididymides. In one study, vasectomy reversal was found to be 69% effective for reducing the symptoms of chronic post-vasectomy pain. Treatment options for 31% of patients whose pain did not respond to vasectomy reversal were limited. The study was very small, only evaluating 13 patients, making it difficult to draw solid conclusions. In severe cases castration has been resorted to.
Possible Vasectomy-Dementia LinkEdit
Researchers reported in February 2007 that a survey of a small number of men with primary progressive aphasia, a rare speech disorder, found that more than twice as many as would be expected had undergone vasectomies. Because primary progressive aphasia is so rare compared to the number of men undergoing vasectomy it is statistically very unlikely that any one individual would develop this problem. The study has not yet been verified by other researchers, and the authors say larger studies are needed to better understand the issue.
Some men experience depression or anger and go through a period of mourning over the loss of their reproductive ability. This emotion is similar to what some women experience after menopause. Approximately half of all vasectomized men prefer to keep their sterilization secret.  Depending upon the study, between five and eleven percent of men regret the decision to have a vasectomy.
- Main article: vasovasostomy
Although men considering vasectomies should not think of them as reversible, and most men and their spouses are satisfied with the operation,  there is a procedure to reverse vasectomies using vasovasostomy (a form of microsurgery first performed by Earl Owen in 1971). Vasovasostomy is effective at achieving pregnancy in only 50%-70% of cases, and it is costly, with total out-of-pocket costs in the United States of approximately $7,000 . The rate of pregnancy depends on such factors as the method used for the vasectomy and the length of time that has passed since the vasectomy was performed. The reversal procedures are frequently impermanent, with occlusion of the vas recurring two or more years after the operation.
Since the body often produces antibodies against sperm, sperm counts are rarely at pre-vasectomy levels. There is evidence that men who have had a vasectomy may produce more abnormal sperm, which would explain why even a mechanically successful reversal does not always restore fertility. The higher rates of aneuploidy and diploidy in the sperms of men who have undergone vasectomy reversal may lead to a higher rate of birth defects .
- In the UK vasectomy is often available free of charge through the National Health Service upon referral by one's GP. However, some PCTs do not fund the procedure. There are private clinics (such as Marie Stopes International) who perform the operation with short waiting times.
- The vasectomy is also covered in Canada.
- In 2006 Argentina approved Vasectomy in Public Health Service
- ↑ includeonly>"No-scalpel vasectomies by skilled surgeons may speed recovery", EurekaAert, April 18 2007. Retrieved on 2007-04-18.
- ↑ Christiansen C, Sandlow J (2003). Testicular Pain Following Vasectomy: A Review of Postvasectomy Pain Syndrome. Journal of Andrology 24 (3).
- ↑ Nielsen CM, Genster HG (1980). Male sterilization with vasectomy. The effect of the operation on sex life. Ugeskr Laeger 142 (10): 641–643.
- ↑ Dias PL (1983). The long-term effects of vasectomy on sexual behavior. Acta Psychiatrica Scandinavica 67 (5): 333–338.
- ↑ Post hernia surgery » Post Prostate Surgery
- ↑ Deshpande RB, Deshpande J, Mali BN, Kinare SG (April 1985). Vasitis nodosa (a report of 7 cases). J Postgrad Med 31 (2): 105–8.
- ↑ Hirschowitz L, Rode J, Guillebaud J, Bounds W, Moss E (April 1988). Vasitis nodosa and associated clinical findings. J. Clin. Pathol. 41 (4): 419–23.
- ↑ Christiansen C, Sandlow J (2003). Testicular Pain Following Vasectomy: A Review of Postvasectomy Pain Syndrome. Journal of Andrology 24 (3).
- ↑ Philp, T; Guillebaud et al (1984). Late failure of vasectomy after two documented analyses showing azoospermic semen. British Medical Journal (Clinical Research Ed.) 289 (6437): 77–79.
- ↑ 10.0 10.1 . "Family Planning Worldwide: 2008 Data Sheet" (PDF). Population Reference Bureau. Retrieved on 2008-06-27.
- ↑ (January 2008). Reducing unintended pregnancy in the United States. Contraception.
- ↑ Bensyl, D.M. and Iuliano, D. and Carter, M. and Santelli, J. and Gilbert, B.C. (November 2005). Contraceptive Use — United States and Territories, Behavioral Risk Factor Surveillance System, 2002. Morbidity and Mortality Weekly Report 54 (SS06): 1–72.
- ↑ William R. Finger (Spring 1998). Attracting Men to Vasectomy. Network 18 (3).
- ↑ http://findarticles.com/p/articles/mi_m0857/is_n1_v14/ai_18027036/pg_4
- ↑ Ninaad S. Awsare, Jai Krishnan, Greg B. Boustead, Damian C. Hanbury, and Thomas A. McNicholas (2005). Complications of vasectomy.. Ann R Coll Surg Engl 87 (6): 406–410.
- ↑ Pamela J. Schwingl, Ph.D., and Harry A. Guess, M.D. (2000). Safety and effectiveness of vasectomy. Fertility and Sterility 73 (5): 923–936.
- ↑ Ahmed I, Rasheed S, White C, Shaikh N. "The incidence of post-vasectomy chronic testicular pain and the role of nerve stripping (denervation) of the spermatic cord in its management." British Journal of Urology. 1997; 79:269-270. PMID 9052481
- ↑ Choe J, Kirkemo A. "Questionnaire-based outcomes study of nononcological post-vasectomy complications." The Journal of Urology. 1996; 155:1284-1286. PMID 8632554
- ↑ McMahon A, Buckley J, Taylor A, Lloyd S, Deane R, Kirk D. "Chronic testicular pain following vasectomy." British Journal of Urology. 1992;69:188-191. PMID 1537032
- ↑ Leslie TA, Illing RO, Cranston DW, Guillebaud J. "The incidence of chronic scrotal pain after vasectomy: a prospective audit." BJU International. 2007. PMID 17850378
- ↑ Christiansen C, Sandlow J (2003). Testicular Pain Following Vasectomy: A Review of Postvasectomy Pain Syndrome. Journal of Andrology 24 (3).
- ↑ JK Nangia, JL Myles and AJ JR Thomas (December 2000). Vasectomy reversal for the post-vasectomy pain syndrome: a clinical and histological evaluation. Journal of Urology 164 (6): 1939–1942.
- ↑ Granitsiotis P, Kirk D. "Chronic testicular pain: an overview." European Urology. 2005;47(5)720. PMID 15041105
- ↑ Salynn Boyles (February 2007). Study Suggests Vasectomy-Dementia Link. WebMD Medical News.
- ↑ Harvard Medical School (September 2001). Vasectomy and Vasovasostomy. Well Connected.
- ↑ ADAM (April 2007). Vasectomy And Vasovasostomy In-Depth. HowStuffWorks.com.
- ↑ Turek P, "Minimally Invasive Reproductive Urology: The No-Scalpel Vasectomy." University of California-San Francisco. http://urology.ucsf.edu/patientGuides/pdf/maleInf/Vasectomy.pdf
- ↑ Evelyn Landry and Victoria Ward (1997). Perspectives from Couples on the Vasectomy Decision: A Six-Country Study. Reproductive Health Matters (special issue): 58–67.
- ↑ Denise J. Jamieson et al (2002). A Comparison of Women’s Regret After Vasectomy Versus Tubal Sterilization. Obstetrics & Gynecology 99 (6): 1073–1079.
- ↑ About Vasectomy Reversal. Professor Earl Owen's homepage. URL accessed on 2007-11-29.
- ↑ Owen ER (1977). Microsurgical vasovasostomy: a reliable vasectomy reversal. Urology.
- ↑ Vasectomy Reversal Cost and Payment Plans http://www.vasectomyinfo.com/vasectomy_reversal_costs.html
- ↑ Nares Sukcharoen, Jiraporn Ngeamvijawat, Tippawan Sithipravej and Sakchai Promviengchai (May 2003). High Sex Chromosome Aneuploidy and Diploidy Rate of Epididymal Spermatozoa in Obstructive Azoospermic Men. Journal of Assisted Reproduction and Genetics 20 (5): 196–203.
- ↑ Vicente Abdelmassih, Jose P. Balmaceda, Jan Tesarik, Roger Abdelmassih and Zsolt P. Nagy (March 2002). Relationship between time period after vasectomy and the reproductive capacity of sperm obtained by epididymal aspiration. Human Reproduction 17 (3): 736–740.
- ↑ Vasectomy Reversal to Lead to Birth Defects. Bio-Medicine. URL accessed on 2007-12-17.
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- ↑ includeonly>"Argentina: vasectomía y ligadura gratis y", bbc.co.uk, BBC, 2006-08-10. Retrieved on 2009-01-12.
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- Vaughn, R. L. (1977). Alteration of attitudes of college males toward the use of vasectomy as a contraceptive procedure: Dissertation Abstracts International.
- The No-Scalpel Vasectomy.
- Family Planning: A Global Handbook for Providers Chapter 12:Vasectomy
- Articles on Vasectomies and Vasectomy Reversals
- Information for Making a Vasectomy Decision
- Vasectomy information from a non institutional source
- No-Scalpel Vasectomy: The NSV Book
- Video: The NSV Procedure (graphic)
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