Medical Journal
Extracts
Page last modified
Thursday, March 20, 2008
|
Medical Journal
Extracts |
 Online journals World Health OrganisationUS Journal of Urology British Journal of Urology British Medical Journal Cochrane Database Index of Medical Journals |
In this section we list abstracts of scientific articles written for doctors and scientists. Abstracts are a summary of the paper usually written by the paper's author(s). The links on this page take you to the original at the National Library of Medicine (Medline). We try to include as many relevant studies as possible, and update this list regularly. Some abstracts have a bullet point Summary available, and some extracts have a link to other sites that will help explain the terminology, or give a simple explanation of it. Every couple of months I look at the recently published research, and summarise it. We also have a series of research papers by Dr P. S. Jhaver published between 1952 and 1973. This period is particularly interesting because it spans the time when vasectomy transformed from being used for several purposes (with or without the patients consent) to an elective family planning method. A frequently asked question is "How can I participate in trials and studies"? clinicaltrials.gov is the central registry of studies and trials recruiting currently, or in the near future. There should be details by any of the research to contact the people conducting it. Please keep in mind that your doctor is the best interpreter of these abstracts. If they raise questions for you, you should ask him or her to help you make sense of them and how they relate to your personal situation. |
|
View journals published in |
Select a
category |
|
|
|
|
Topic category |
Title |
Pub. Date |
Description |
|
Complications (non PVP) |
Feb 2008 |
Rare case history Summary available |
|
|
Vasectomy techniques and early studies |
Does the type of suture material used for ligation of the vas deferens affect vasectomy success? |
Jan 2008 |
Study to determine if materials used for closing the vas deferens makes a difference to reliability. Concludes that it does! Summary available |
|
Vasectomy techniques and early studies |
Dec 2007 |
Study to compare the effectiveness of two local anesthetic techniques in men undergoing no-scalpel vasectomy. Concludes that No-needle anesthesia with jet injection reduced the pain associated with traditional delivery of anesthesia to the skin and vas deferens before no-scalpel vasectomy. Summary available |
|
|
PVP incidence and treatment |
The incidence of chronic scrotal pain after vasectomy: a prospective audit. |
Sep 2007 |
To assess the extent of scrotal pain in men before and after vasectomy, to produce accurate data for the benefit of men considering this procedure, and hence improved informed consent about the outcomes, as chronic scrotal pain after vasectomy is a poorly quantified clinical problem. Authors seemingly intend to follow this group over time. Summary available |
|
Vasectomy reversal (non PVP) |
Factors affecting successful outcome from ICSI in men following previous vasectomy. |
Jul 2007 |
This study aims to evaluate factors that may influence the outcome of ICSI in males with secondary azoospermia due to previous vasectomy. Summary available |
|
Vasectomy reversal (non PVP) |
Jun 2007 |
Statistical modelling study to assess the cost effectiveness of the relative impact of obstructive interval and female partner age on fertility using either assisted reproductive technology (ART) or vasectomy reversal, and elucidate the impact of these variables on fertility. Main result is that fertility after vasectomy suggests female age has more impact than vasectomy obstructive interval on cost effectiveness. Summary available |
|
|
Vasectomy reversal (non PVP) |
Effect of female partner age on pregnancy rates after vasectomy reversal. |
Jun 2007 |
Study to determine the effect of female partner age on pregnancy rates after vasectomy reversal finds that pregnancy rates for vasectomy reversal were good regardless of female age as long as the partner was 39 years old or younger. Pregnancy rates were lower if the female partner was 40 or more years old. Summary available |
|
Vasectomy reversal (non PVP) |
The kinetics of the return of motile sperm to the ejaculate after vasectomy reversal. |
Jun 2007 |
Study looking at if vasectomy reversal or ICSI/IVF is most likely to result in pregnancy, and how to predict this. Summary available |
|
Post vasectomy sperm counts and follow ups |
May 2007 |
Study to prospectively determine the impact of scheduled follow-up appointments with compliance rates after vasectomy finds that scheduling an appointment after vasectomy provides a statistically and clinically significant improvement in compliance. Summary available |
|
|
Long term studies |
Immune-related disease before and after vasectomy: an epidemiological database study. |
Feb 2007 |
Study into the long term effects of the auto-immune response finds no evidence that vasectomy increases the subsequent long-term risk of immune-related diseases. Summary available |
|
Post vasectomy sperm counts and follow ups |
Jan 2007 |
Study looking at post vasectomy samples compliance finds that scheduled appointments improve compliance rates. Summary available |
|
|
Vasectomy techniques and early studies |
Persistent motile sperm after ligation band (Vasclip) vasectomy. |
Nov 2006 |
Independant study looks at the failure rate of the Vasclip device. Summary available |
|
Vasectomy techniques and early studies |
Oct 2006 |
Chochrane database study to look at differences between traditional scalpel and no-scalpel vasectomy techniques. Summary available |
|
|
Vasectomy techniques and early studies |
Frequency and patterns of early recanalization after vasectomy. |
Sep 2006 |
Study looking at recanalization rates of different techniqes. Summary available |
|
Incidence of vasectomy |
Jul 2006 |
Statistical estimation of the number of vasectomies, and methods used in the US during 2002. Summary available |
|
|
Post vasectomy sperm counts and follow ups |
Apr 2006 |
This study looks at how often men return for post vasectomy samples, how quickly they clear and recommends a post vasectomy screening protocol. Summary available |
|
|
Vasectomy techniques and early studies |
An implantable ligation device that achieves male sterilization without cutting the vas deferens. |
Apr 2006 |
First independant peer reviewed study into the effectiveness of the Vasclip device Summary available |
|
Vasectomy techniques and early studies |
A phase II randomized controlled trial of a novel male contraception, an intra-vas device. |
Mar 2006 |
Study into the effectiveness of an intra-vas device being worked on in both the US and China that may become an alternative to vasectomy. Summary available |
|
Misc research and legal implications |
Cigarette smoking is related to a decrease in semen volume in a population of fertile men. |
Feb 2006 |
Study to evaluate the semen quality and hormonal levels in fertile men according to their level of cigarette smoking finds that Cigarette smoking tends to reduce semen volume. Summary available |
|
Vasectomy and prostate cancer |
Cancer and cardiovascular disease after vasectomy: an epidemiological database study. |
Nov 2005 |
Database study to determine whether vasectomy is associated with an increased long-term risk of cancer or cardiovascular disease. Results were that vasectomy is not associated with an increase in the long-term risk of these diseases. Summary available |
|
Misc research and legal implications |
Hormonal contraception for males--an option for adolescents? |
Oct 2005 |
Discussion of the possibility of using the male hormonal birth control to limit the number of unwanted teenage pregnancies Summary available |
|
Misc research and legal implications |
Sep 2005 |
Australian survey of sexual activity, men's behaviour and attitudes in the older population. Summary available |
|
|
Misc research and legal implications |
Sep 2005 |
Discussion on the current status of male hormonal contraceptive research. Summary available |
|
|
Post vasectomy sperm counts and follow ups |
How little is enough? The evidence for post-vasectomy testing. |
Jul 2005 |
Australian review of 56 studies that looked at post vasectomy testing. Concludes that "The evidence supports a PVSA protocol with 1 test showing azoospermia after 3 months and 20 ejaculations. If the sample is positive, periodic testing can continue until azoospermia is achieved. Patients with persistent nonmotile sperm in low numbers could be given cautious assurance of success." Summary available |
|
PVP incidence and treatment |
Chronic Scrotal Pain Syndrome: Management among Urologists in Switzerland. |
Jun 2005 |
General study into the incidence and management of chronic scrotal pain syndrome. Summary available |
|
Vasectomy reversal (non PVP) |
Jun 2005 |
Study into sperm yields of sperm obtained by testicular biopsy and used in assisted conception with ICSI. Yields were lower, and pregnancy rates in couples who had had a vasectomy were also significantly reduced. Summary available |
|
|
Vasectomy reversal (non PVP) |
Jun 2005 |
The study aims were to compare sperm yields of men post-vasectomy or with obstructive azoospermia (OA) of unknown aetiology with yields of fertile men and to assess any alteration in the clinical pregnancy rates after ICSI. Cobncludes that "Sperm yields/g testis were significantly decreased in men post-vasectomy and in men with OA, relative to fertile men." Summary available |
|
|
Post vasectomy sperm counts and follow ups |
Delayed vasectomy success in men with a first postvasectomy semen analysis showing motile sperm. |
May 2005 |
To determine the frequency of and factors associated with delayed vasectomy success in men with first postvasectomy semen analysis showing motile sperm. Summary available |
|
Vasectomy and prostate cancer |
Association of vasectomy and prostate cancer among men in a Maryland cohort. |
May 2005 |
Questionnaire based study suggests positive association between vasectomy and prostate cancer Summary available |
|
Vasectomy reversal (non PVP) |
Model to predict if a vasoepididymostomy will be required for vasectomy reversal. |
May 2005 |
Discussion of a model to predict, preoperatively, the need for a vasoepididymostomy (VE) when performing a vasectomy reversal. Urologists could use it to identify those patients who need a referral to an experienced VE surgeon. Summary available |
|
Vasectomy techniques and early studies |
No-needle jet anesthetic technique for no-scalpel vasectomy. |
May 2005 |
Study of a new, modified jet injection technique for local anesthesia for no-scalpel vasectomy without the use of a needle, which may minimize the fear of vasectomy in men due to the needle involved in local anesthesia. Concludes that No-needle jet injection is remarkably effective for local anesthesia for no-scalpel vasectomy. Summary available |
|
Vasectomy and prostate cancer |
Apr 2005 |
Investigates associations between prostate cancer and sexually transmitted diseases (STDs), prostatitis, benign prostatic hyperplasia (BPH), and vasectomy in a population-based case-control study in Wayne County, Michigan, among African American and white men aged 50-74 years. Concludes that "Among all subjects, prostate cancer was associated with prostatitis and BPH history, but not with STD or vasectomy history." Summary available |
|
|
Vasectomy reversal (non PVP) |
Apr 2005 |
Several studies indicate that microsurgical modified one-layer vasovasostomy is comparable to the two-layer anastomosis with respect to patency and pregnancy rates. patency and pregnancy rates were similar to those obtained in most studies of microsurgical vasovasostomy. Summary available |
|
|
Vasectomy techniques and early studies |
Mar 2005 |
The aim of theis study was to identify differences within the hospitals of Morecambe Bay NHS Trust and to recommend a uniform practice. Summary available |
|
|
Vasectomy techniques and early studies |
Feb 2005 |
The simply modified no-scalpel vasectomy (SMNSV; percutaneous vasectomy) technique was reported to simplify the standard no-scalpel vasectomy (SNSV) procedure. In this report, we introduce our experiences with SMNSV in comparison with the SNSV. Summary available |
|
|
Post vasectomy sperm counts and follow ups |
Jan 2005 |
Study to determine compliance rate of post vasectomy semen analysis finds that up to 42% of men don't follow up with giving samples. Older men are more likely to comply than younger men. Full text version Summary available |
|
|
Vasectomy reversal (non PVP) |
A different female partner does not affect the success of second vasectomy reversal. |
Jan 2005 |
The aim of the study was to determine whether the pregnancy rate with the same female partner or younger partners was higher compared with different or older partners after undergoing repeated vasectomy reversal. Concludes that repeat microsurgical vasectomy reversal still remains a reasonable choice for patients with different female partners. However, it should be considered that the likelihood of achieving pregnancy after repeat vasectomy reversal may decrease with advancing age of the female partner. Summary available |
|
Post vasectomy sperm counts and follow ups |
Vasectomy follow-up: Clinical significance of rare nonmotile sperm in postoperative semen analysis. |
Dec 2004 |
Study to examine patient compliance, complications, and significance of rare nonmotile sperm (RNMS) after no-scalpel vasectomy concludes that most men with RNMS become azoospermic and propose that the presence of RNMS is consistent with a successful vasectomy. Summary available |
|
Vasectomy techniques and early studies |
Nov 2004 |
This review aimed to compare the effectiveness, safety and acceptability of vasectomy techniques for male sterilization. It searched five computerized databases and reference lists of relevant articles and book chapters for randomized controlled trials (RCTs) and controlled clinical trials (CCTs) comparing vasectomy techniques. Concludes "More work is also needed in the standardization of follow-up protocols, evaluation of vasectomy success and failure, recanalization and analytical methods." Summary available |
|
|
Post vasectomy sperm counts and follow ups |
Vasectomy-related changes on sonographic examination of the scrotum. |
Oct 2004 |
The goal of this study was to evaluate the sonographic changes in the epididymis and testis after vasectomy using state-of-the-art high-resolution equipment. Summary available |
|
Vasectomy reversal (non PVP) |
The best infertility treatment for vasectomized men: assisted reproduction or vasectomy reversal? |
Oct 2004 |
Comparison of IVF/ICSI and microsurgical reconstruction as treatments for infertile vasectomised men. Concludes thatreversai is more "cost effective" if the obstructive interval is less than 15 years and no female fertility risk factors are present. Summary available |
|
Vasectomy techniques and early studies |
Oct 2004 |
Vasectomy techniques have been the subject of relatively few rigorous studies. The objective of this analysis was to compare the effectiveness of two techniques for vas occlusion: intraluminal cautery versus ligation and excision with fascial interposition. Concludes that "The use of cautery improves vasectomy outcomes." Summary available |
|
|
Complications (non PVP) |
Sep 2004 |
Spanish study into re-canalization finds "the existence of granulomas in those cases in which spontaneous recanalization appears. In our series it was a constant." Two cases out of 1,942. Summary available |
|
|
Misc research and legal implications |
Aug 2004 |
Minimally invasive vasectomy technique with unconventional instruments. Summary available |
|
|
Vasectomy reversal (non PVP) |
Aug 2004 |
Men undergoing vasectomy reversal many years after vasectomy are at increased risk for secondary epididymal obstruction. When this occurs the intravasal fluid is often a thick, white, toothpaste-like material devoid of sperm. In this study we characterize the vasal fluid found in men with a newly described entity, segmental dysplasia of the vas deferens, in which at least 2 distinct sites of vasal obstruction are present. We determine the significance of this fluid in men with obstructive azoospermia. Summary available |
|
|
Vasectomy reversal (non PVP) |
Aug 2004 |
To determine the effects of time since vasectomy and maternal age on intracytoplasmic sperm injection (ICSI) outcome in azoospermic men after vasectomy. Concludes that "Our data suggest that maternal age, and not interval since vasectomy, remains the principal determinant of ICSI success in men with obstructive azoospermia after vasectomy." Summary available |
|
|
Post vasectomy sperm counts and follow ups |
Jul 2004 |
The main objectives of this study were to estimate the effectiveness of vasectomy by cautery and to describe the trends in sperm counts after cautery vasectomy. Other objectives were to estimate time and number of ejaculations to success and to determine the predictive value of success at 12 weeks for final status at 24 weeks. Full text version. Summary available |
|
|
Post vasectomy sperm counts and follow ups |
Jul 2004 |
Study to determine whether a saline flush during vasectomy would reduce the time needed to reach azoospermia. Concludes "Vasal perfusion with saline during vasectomy was effective in removing sperm from the distal vas; however, perfusion did not increase the rate at which men achieve azoospermia." Summary available |
|
|
Misc research and legal implications |
Jun 2004 |
Study to the net impact of contraception on women's health of contraception. Finds that contraception results in net savings and health gains ranging from US$5907 per woman for tubal sterilization to US$9936 for vasectomy. Summary available |
|
|
Misc research and legal implications |
Jun 2004 |
Study to define whether the outcome of intracytoplasmic sperm injection (ICSI) using sperm surgically retrieved from men with obstructive azoospermia (OA) depends on the cause of obstruction. Summary available |
|
|
Vasectomy reversal (non PVP) |
Jun 2004 |
Study into the effectiveness of sperm aspiration and intrauterine insemination as a means of enabling couples to conceive without vasectomy reversal. Summary available |
|
|
Vasectomy reversal (non PVP) |
Jun 2004 |
Study to quantify germ cell loss and the extent of testicular fibrosis in vasectomized patients of varying obstructive intervals. Concludes "Vasal obstruction results in significant reductions in germ cells in the later stages of spermatogenesis and increases in testicular fibrosis, both worsening with an increasing obstructive interval. Testicular damage after vasectomy might impact upon the prospects for reversal." Summary available |
|
|
Post vasectomy sperm counts and follow ups |
May 2004 |
Study to describe the pregnancy rates among women whose husbands underwent vasectomy. Concludes:- "Couples considering vasectomy should be counseled about the small, but real, risk of pregnancy following the procedure and that men are not sterile immediately after vasectomy." Summary available |
|
|
Post vasectomy sperm counts and follow ups |
May 2004 |
Survey of 2000 urologists puts pregnancy rate at 1 in 1000. Also notes that the rate of pregnancies is lower if the surgeon does more than 50 procedures per year. Approx. 25% reply rate to survey. Summary available |
|
|
Vasectomy reversal (non PVP) |
Superior outcomes of microsurgical vasectomy reversal in men with the same female partners. |
May 2004 |
Study to evaluate the outcomes of vasectomy reversals in men with the same female partners. Concludes:- "The outcomes of vasectomy reversal in men with the same female partners are better than for men with new partners." Summary available |
|
Vasectomy techniques and early studies |
May 2004 |
Study to compare the effect of buffered and un-buffered commercial 1% xylocaine (with 1:200,000 adrenaline) preparation on pain during infiltration and procedure. Summary available |
|
|
Vasectomy techniques and early studies |
May 2004 |
The purpose of this systematic review was to assess if any surgical techniques to isolate or occlude the vas are associated with better outcomes in terms of occlusive and contraceptive effectiveness, and complications. Summary available |
|
|
Incidence of vasectomy |
Apr 2004 |
The aims of this paper are: 1. To study the demand and reasons why of the vasectomy in area 12 of Valencian Community. 2. To analyse the adverse effects of our series and the predictable risk factors. 3. To review the adverse effects in the national series. 4. To review the adverse effects referred to in international publications. Summary available |
|
|
Post vasectomy sperm counts and follow ups |
Apr 2004 |
Study looking at the time required to obtain a negative sperm analysis after vasectomy concludes:- "A minimum of 200 days (6.6 months) are needed to clear all the spermatozoa in semen after vasectomy in 80% of our patients." Summary available |
|
|
PVP incidence and treatment |
Apr 2004 |
General overview of chronic testicular pain, including post vasectomy. This abstract doesn't give you much information, but you can purchase it online for $30. Summary available |
|
|
Vasectomy reversal (non PVP) |
Apr 2004 |
Study into vasoepididymostomy and vasovasostomy using the Da Vinci robot in rats. Summary available |
|
|
Misc research and legal implications |
Mar 2004 |
"Vasectomy guidelines largely rely on information from observational studies. Ideally, the choice of vasectomy techniques should be based on the best available evidence from randomized controlled trials." This study analyses a lot of data from a variety of sources. Summary available |
|
|
Misc research and legal implications |
Vasectomy: study of 300 interventions. Review of the national literature and of its complications |
Mar 2004 |
Analysis of 300 vasectomy cases and literature comparisons in Spain. Vasectomy is the 8th most performed procedure in Spain. Summary available |
|
PVP incidence and treatment |
Early and late morbidity after vasectomy: a comparison of chronic scrotal pain at 1 and 10 years. |
Mar 2004 |
Study to evaluate the incidence and timing of the onset of chronic scrotal pain after vasectomy in two populations at 1 and 10 years after surgery. See tabulated data for this study. Summary available |
|
Vasectomy techniques and early studies |
Mar 2004 |
"Vasectomy guidelines largely rely on information from observational studies. Ideally, the choice of vasectomy techniques should be based on the best available evidence from randomized controlled trials." This study analyses a lot of data from a variety of sources. Summary available |
|
|
Vasectomy techniques and early studies |
Mar 2004 |
Study to see comparing fascial interposition (placing a layer of the vas sheath between 2 cut ends of the vas) with non-fascial interposition vasectomy finds that it improves vasectomy success. Full manuscript in .PDF format Summary available |
|
|
Incidence of vasectomy |
Characteristics of men receiving vasectomies in the United States, 1998-1999. |
Feb 2004 |
Study into the characteristics of men choosing vasectomy and why they decide to undergo the procedure. Summary available |
|
Satisfaction with vasectomy and counselling |
Characteristics of men receiving vasectomies in the United States, 1998-1999. |
Feb 2004 |
Study into the characteristics of men choosing vasectomy and why they decide to undergo the procedure. Summary available |
|
Vasectomy reversal (non PVP) |
Our experience with simplified vasovasostomy. Review of our results during the last 5 years |
Feb 2004 |
Spanish study suggest that vasectomy reversal has equal success rates to IVF, without the multiple pregnancies associated with IVF. It suggests that reversal should be tried before IVF. Summary available |
|
Vasectomy reversal (non PVP) |
Our experience with simplified vasovasostomy. Review of our results during the last 5 years |
Jan 2004 |
Study into vasectomy reversal success concludes:- "Our results in terms of pregnancies are equivalent to those obtained by ICSI. Vasovasostomy should be the initial option for treatment of male infertility" Summary available |
|
Satisfaction with vasectomy and counselling |
Dec 2003 |
Small survey into relationships between the age at which vasectomy was performed and the interval before subsequent reversal within the context of the armed forces. Concludes that Men who had their vasectomies before reaching the age of thirty were more likely to undergo reversal in a significantly shorter period of time when compared to those over thirty years. Summary available |
|
|
Vasectomy reversal (non PVP) |
Dec 2003 |
Small survey into relationships between the age at which vasectomy was performed and the interval before subsequent reversal within the context of the armed forces. Concludes that Men who had their vasectomies before reaching the age of thirty were more likely to undergo reversal in a significantly shorter period of time when compared to those over thirty years. Summary available |
|
|
Incidence of vasectomy |
Sep 2003 |
To estimate incidence rates for tubal occlusion and vasectomy, and to examine how these vary with age, geographical area and time. Vasectomy is static, and tubals are down by 30% Summary available |
|
|
Post vasectomy sperm counts and follow ups |
Sep 2003 |
Study into how long it takes to become azoospermatic after vasectomy concludes "Our results suggest that it is not possible to develop guidelines for clearance based only on the time or number of ejaculations when ligation and excision are performed." Summary available |
|
|
Vasectomy techniques and early studies |
Sep 2003 |
Study of medical students performing various procedures. It finds that vasectomy is one of the procedures they are least likely to perform in residency. It concludes that "Despite reports that core procedural skills are taught, this study suggests significant numbers of residents are not being taught certain procedures in a manner that results in residents feeling competent to perform them." Summary available |
|
|
Vasectomy techniques and early studies |
Sep 2003 |
Study to look at failure rates of various techniques. CLICK HERE for the full text version of this paper. Summary available |
|
|
Male ageing |
A survey of the long-term incidence rate of benign prostate hyperplasia after vasectomy |
Aug 2003 |
Study on the relationship of the long-term incidence rate of benign prostate hyperplasia (BPH) after vasectomy to age and time after operation concludes that "Vasectomy reduces the incidence rate of BPH significantly." CLICK HERE for general information on BHP. Summary available |
|
Prostatitis |
A survey of the long-term incidence rate of benign prostate hyperplasia after vasectomy |
Aug 2003 |
Study on the relationship of the long-term incidence rate of benign prostate hyperplasia (BPH) after vasectomy to age and time after operation concludes that "Vasectomy reduces the incidence rate of BPH significantly." CLICK HERE for general information on BHP. Summary available |
|
Misc research and legal implications |
Jun 2003 |
The Internet is a popular, but ungoverned, source of medical information. This study tracked the change in performance of commonly available search engines and the quality of medical data therein over a four-year period. Summary available |
|
|
Vasectomy reversal (non PVP) |
Jun 2003 |
Study investigating the current incidence of vasectomy reversal procedures, the techniques used and which practitioners use them. Concludes "Vasectomy reversal is a cost-effective treatment for men wanting paternity after vasectomy. All the partners of men seeking a vasectomy reversal should have their fertility status established before reversal, something that is clearly not done at present." |
|
|
Vasectomy reversal (non PVP) |
Pregnancy outcomes after vasectomy reversal for female partners 35 years old or older. |
Jun 2003 |
Review of the outcomes after vasectomy reversal for couples with female partners 35 years old or older. Concludes "Vasectomy reversal offers reasonable chance for success when the female partner is 35 years old or older. The chance for success is similar to that of a single cycle of in vitro fertilization with intracytoplasmic sperm injection". |
|
Vasectomy reversal (non PVP) |
Outcomes of vasectomy reversal performed for men with the same female partners. |
Jun 2003 |
Study into the fertility outcomes of patients who underwent vasectomy reversal and attempted conception with the same female partners. Results of 93% patency and 60% pregnancy. Concludes "Microsurgical vasectomy reversal may have higher success rates when performed for couples with the same female partner." |
|
Vasectomy reversal (non PVP) |
Vasovasostomy: multiple children and Long-term pregnancy rates. |
May 2003 |
To determine the long-term patency and pregnancy rates after vasovasostomy and to determine the likelihood of having more than 1 child after this procedure. Summary available |
|
Vasectomy reversal (non PVP) |
Sterilization failure, sterilization reversal, and pregnancy after sterilization reversal in Quebec |
Apr 2003 |
Among men, 2.4% (of 310827) obtained a reversal after vasectomy and 18% (of 6694) obtained a subsequent vasectomy after reversal. All of these risks were much higher among those in the youngest age groups. Relatively high rates of reversal among the youngest age groups suggest a need for better counseling about alternative contraceptive strategies. |
|
Vasectomy techniques and early studies |
Comparison of Marie Stopes scalpel and electrocautery no-scalpel vasectomy techniques. |
Apr 2003 |
Comparative study of NSV and conventional concludes:- "The ENSV procedure appears to be suitable for mass application in locations where electricity is available". Summary available |
|
Vasectomy techniques and early studies |
Apr 2003 |
Study to evaluate the association between the length of the vas deferens excised during vasectomy and the risk of recanalization finds no association between the length of vas segment excised, and the risk of recanalization. Summary available |
|
|
Vasectomy reversal (non PVP) |
Outcomes for vasovasostomy with bilateral intravasal azoospermia. |
Jan 2003 |
Study into two methods of vasectomy reversal, and how effective they are in certain situations. |
|
Vasectomy techniques and early studies |
Jan 2003 |
Study into the procedure of "sperm aspiration" (removing sperm from the testes directly). Is it painful and does it work? |
|
|
Vasectomy techniques and early studies |
Jan 2003 |
Study o evaluate the relationship between the postvasectomy period and sperm reproductive capacity after ICSI concludes:- "The interval between the vasectomy and the sperm retrieval procedure has no effect on the outcome until the interval of 14 years. ". |
|
|
Complications (non PVP) |
Effectiveness and Complications Associated With 2 Vasectomy Occlusion Techniques. |
Dec 2002 |
Canadian study of 3,761 find that the open ended technique is more effective than other methods. |
|
Vasectomy and prostate cancer |
Dec 2002 |
Meta-anaylysis of other studies relative risk estimates on the association between prostate cancer and vasectomy, in an attempt to determine whether there is an association, and if so, its magnitude. |
|
|
Vasectomy techniques and early studies |
Effectiveness and Complications Associated With 2 Vasectomy Occlusion Techniques. |
Dec 2002 |
Canadian study of 3,761 find that the open ended technique is more effective than other methods. Summary available |
|
Post vasectomy sperm counts and follow ups |
British Andrology Society guidelines for the assessment of post vasectomy semen samples (2002). |
Nov 2002 |
Guidelines for giving the "All clear". Summary available |
|
Vasectomy reversal (non PVP) |
Outcomes for vasectomy reversal performed after obstructive intervals of at least 10 years. |
Nov 2002 |
Study into if vasectomy reversal is a better option than ICSI after 10 plus years finds that:- "Even after prolonged obstructive intervals, vasectomy reversal offers better or comparable success rates to ICSI." |
|
Vasectomy and prostate cancer |
Vasectomy and prostate cancer characteristics of patients referred for prostate biopsy. |
Oct 2002 |
Study into prostate biopsies finds no increase (or less) incidence of prostate cancer in vasectomised men. 585 biopsies performed in the study. |
|
Long term studies |
Prostate cancer is not increased in men with vasectomy in denmark. |
Aug 2002 |
Danish study finds no increase in prostate cancer incidence, even after 25 years. |
|
Vasectomy and prostate cancer |
Prostate cancer is not increased in men with vasectomy in denmark. |
Aug 2002 |
Danish study finds no increase in prostate cancer incidence, even after 25 years. |
|
Vasectomy reversal (non PVP) |
Aug 2002 |
Study into the use of sperm retrieval in cases of vasectomy reversal that didn't make the patient fertile again. The study finds that sperm can be sucessfully retrieved, but epidiymal cysts can affect retrieval rates. |
|
|
Vasectomy techniques and early studies |
Aug 2002 |
Study into the effects of "Flushing out" post vasectomy semen to see if this speed up the time to when the "All clear" can be given finds it has no effect. |
|
|
Vasectomy techniques and early studies |
Aug 2002 |
Study into the use of sperm retrieval in cases of vasectomy reversal that didn't make the patient fertile again. The study finds that sperm can be sucessfully retrieved, but epidiymal cysts can affect retrieval rates. |
|
|
PVP incidence and treatment |
Jul 2002 |
To assess the prevalence of chronic post-vasectomy testicular pain (CPTP) compared to the prevalence of chronic testicular pain in a control population of non-vasectomised men. Summary available |
|
|
Satisfaction with vasectomy and counselling |
The influence of a vasectomy on the marital relationship and sexual satisfaction of the married man. |
Jul 2002 |
Self explanatory. Concludes no significant differences before and after. |
|
Vasectomy techniques and early studies |
Jul 2002 |
Study into the use of anesthetic cream to see if it can reduce the pain associated with lidocaine injections given as local anesthesia for vasectomy. The study concludes that it can significantly reduce the pain - ask for it guys!! |
|
|
Long term studies |
Jun 2002 |
New Zealand study finds no relative risk between vasectomy and prostate cancer - even more than 25 years later |
|
|
PVP incidence and treatment |
Management of Chronic Testalgia by Microsurgical Testicular Denervation. |
Jun 2002 |
Excellent general article discussing the use of Microsurgical Testicular Denervation in the treatment of Chronic Testicular Pain. The study finds that in well selected patients, a success rate of 96% can be achieved. It also discusses other treatment options, and causes of CTP. |
|
Satisfaction with vasectomy and counselling |
A comparison of women's regret after vasectomy versus tubal sterilization. |
Jun 2002 |
5 year study into risk factors for regret among women whose husbands underwent vasectomy with women after tubal sterilization. It concludes that most women did not express regret after their husband's vasectomy and the probability of regret was similar to sterilized women. The excaption being where there was substantial conflict between a woman and her husband before vasectomy or tubal sterilization. Summary available |
|
Vasectomy and prostate cancer |
Jun 2002 |
New Zealand study finds no relative risk between vasectomy and prostate cancer - even more than 25 years later |
|
|
Post vasectomy sperm counts and follow ups |
Frequency of recanalization after vasectomy. Experiences from 2,563 sterilizations |
Apr 2002 |
Study into recanalisation, and if it's related to the experience of the surgeon. Out of 2562 vasectomies, 1.4% required the procedure to be redone. It also concludes that the surgeons skill isn't a factor. |
|
Vasectomy and hormones |
Apr 2002 |
New Zealand infertility research finds antisperm antibodies are in all men - vasectomized or not |
|
|
Vasectomy techniques and early studies |
Apr 2002 |
Danish study finds no significant difference between standard an NSV techniques for complication rates |
|
|
Post vasectomy sperm counts and follow ups |
Mar 2002 |
Study into flushing the vas deferens to see if this speeds of the clearance of sperm post vasectomy concludes that it doesnt accelerate clearance. |
|
|
Male ageing |
Feb 2002 |
Data to establish normative age trends for serum level of T and related hormones in middle-aged men and to test whether general health status affected the age trends. Conclusion suggests that incident poor health may accelerate the age-related decline in androgen levels. Summary available |
|
|
Long term studies |
Jan 2002 |
Long term study into if there is a link between vasectomy and heart disease. It concludes that there is no link, even after 20 plus years |
|
|
Vasectomy and other conditions |
Jan 2002 |
Long term study into if there is a link between vasectomy and heart disease. It concludes that there is no link, even after 20 plus years |
|
|
Vasectomy techniques and early studies |
Noninvasive vasectomy using a focused ultrasound clip: thermal measurements and simulations. |
Dec 2001 |
Research in the currently experimental technique of non-invasive vasectomy that uses ultrasound to seal the vas deferens without any incision being made. This research was done on dogs, and gets round some of the problems of previous research (skin burns and inconsistent vas occlusion) |
|
Vasectomy and hormones |
Nov 2001 |
Weekly intramuscular administration of testosterone esters have been studied as a male contraceptive. For unknown reasons, however, some men fail to achieve azoospermia with such regimens. Study concludes that "Innate differences in the testicle's ability to maintain spermatogenesis in a low-gonadotropin environment may explain persistent spermatogenesis in some men treated with androgen-based contraceptive regimens." Summary available |
|
|
Male ageing |
Oct 2001 |
Survey revealed there may be a reduced probability of ED in those who ride less than 3 h per week and ED may be more likely in bikers who ride more than 3 h per week. |
|
|
Satisfaction with vasectomy and counselling |
Oct 2001 |