Navigation Links
96 percent of vasectomy patients cleared without need for multiple semen samples

Having to provide repeated semen samples following a vasectomy could soon be a thing of the past, after 96 per cent of men were given the all-clear based on a single test three months after surgery.

Research from The Netherlands, published in the June issue of the urology journal BJUI, showed that 51 per cent of the 1,073 samples contained no sperm and a further 45 per cent contained less than 100,000 immotile sperm. No paternity was reported in the cleared group after a follow-up of at least a year.

"Vasectomy is a minimally invasive surgical procedure that provides a widespread, reliable and relatively easy method of birth control" says co-author Dr Herman van Roijen from the Department of Urology at St Elisabeth Hospital, Tilburg, The Netherlands.

"One of the major drawbacks is that a considerable number of men still have a few immotile sperm in their semen for a year or more. Conventional guidelines have stated that clearance can only be given to men who provide one or two sperm-free samples. The fear of legal action if pregnancy does occur has led to very conservative vasectomy protocols.

"However, our study based on guidelines issued by the Dutch Urological Association shows that one semen test is adequate to provide clearance in the vast majority of cases."

A two-step process was developed by the research team to analyse the semen samples.

  • The first step was wet slide analysis of the semen samples in a deep chamber to provide a relatively reliable indication of sperm numbers and motility. This showed that 51.2 per cent of the samples were sperm free and 41.5 per cent contained less than 50 immotile sperm, giving an initial clearance rate of 92.7 per cent.

  • The remaining 7.3 per cent were then tested using a Neubauer Haemocytometer, according to guidelines issued by the World Health Organization. This resulted in a further 3.3 per cent being cleared and four per cent being declared potentially fertile.

A total of 481 men (44.7 per cent) received clearance with residual immotile sperm still present in their semen. After a follow-up of at least one year, no pregnancies had been reported.

"Our study clearly shows that three months after vasectomy about half of our patients were still producing sperm, albeit immotile and in very small numbers" says Dr van Roijen. "In fact, we found even higher percentages than previous studies.

"However, our study also showed that these residual sperm are of no clinical consequence."

The authors conclude that the era of repeated visits to a clinic to deliver yet another semen sample many months after a vasectomy may now be over.

"If the guidelines now being employed in The Netherlands were adopted elsewhere, it could dramatically increase the number of men who could be cleared three months after a vasectomy, having provided just one semen sample" says Dr van Roijen.


Contact: Annette Whibley

Related medicine news :

1. HIRC Research Alert: Health Plans Expected to Increase Adoption of Percent Copays to Manage Specialty Medications
2. Only 5 percent of cancer research funds are spent on metastases, yet it kills 90 percent of all cancer patients
3. Scientific Study Reveals that 79 Percent of Electronic Cigarette Users Have Stopped or Reduced Their Tobacco Use
4. Suntricity Power Stations Report Nearly 100% Percent Uptime Suntricity Power Stations using AC power more reliable than standard sun powered solar systems
5. More than 60 percent of teachers have voice problems
6. Users Increase Sales and Marketing Communications 320 Percent
7. Medicare 21 percent physician payment cut to go into effect April 15
8. 90 percent of children with intermittent exotropia will become nearsighted by 20 years of age
9. Preterm birth rate drops 3 percent
10. New Research Shows 'Kangaroo Mother Care' Reduces Newborn Deaths More than 50 Percent
11. Infant Head Bed Celebrates Launch of New Web Site and Packaging by Offering 20 Percent Discount on Plagiocephaly Prevention Pillow
Post Your Comments:
(Date:6/26/2016)... ... , ... Brent Kasmer, a legally blind and certified personal trainer is helping to develop a ... fitness app plans to fix the two major problems leading the fitness industry today:, ... type program , They don’t eliminate all the reasons people quit their exercise ...
(Date:6/25/2016)... Viejo, California (PRWEB) , ... June 25, 2016 , ... ... to fit their specific project," said Christina Austin - CEO of Pixel Film Studios. ... fully customizable and all within Final Cut Pro X . Simply select a ...
(Date:6/25/2016)... Canada (PRWEB) , ... June 25, 2016 , ... Conventional ... pursuit of success. In terms of the latter, setting the bar too high can ... risk more than just slow progress toward their goal. , Research from ...
(Date:6/24/2016)... ... 2016 , ... The Pulmonary Hypertension Association (PHA) learned during ... two significant new grants to support its work to advance research and patient ... recognizing patients, medical professionals and scientists for their work in fighting pulmonary hypertension ...
(Date:6/24/2016)... Plano, TX (PRWEB) , ... June 24, 2016 , ... ... taking part in Genome magazine’s Code Talker Award, an essay contest in which patients ... for an award to be presented at the 2016 National Society of Genetic Counselors ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... , June 23, 2016 ... CAPR ), a biotechnology company focused on the ... announced that patient enrollment in its ongoing randomized ... has exceeded 50% of its 24-patient target. Capricor ... the third quarter of 2016, and to report ...
(Date:6/23/2016)... INDIANAPOLIS , June 23, 2016 If ... Leaders Scholarship is any indication, the future is in ... at by the Diabetes Scholars Foundation ... the way of academic and community service excellence. ... since 2012, and continues to advocate for people with ...
(Date:6/23/2016)... 23, 2016 The vast majority of dialysis ... facility.  Treatments are usually 3 times a week, with ... including travel time, equipment preparation and wait time.  This ... grueling for patients who are elderly and frail.  Many ... and rehabilitation centers for some duration of time. ...
Breaking Medicine Technology: