Vasectomy occlusion techniques for male sterilization

Area of Science:

• Reproductive medicine
• Urology
• Family planning

Background:

• Vasectomy is a popular and effective male sterilization method.
• Current guidelines often rely on observational data, highlighting the need for randomized controlled trials (RCTs).
• Various techniques exist, including different occlusion methods, irrigation, and fascial interposition.

Purpose of the Study:

• To compare the effectiveness, safety, acceptability, and costs of different vasectomy techniques for male sterilization.

Main Methods:

• Searched multiple databases (CENTRAL, MEDLINE, EMBASE, POPLINE, LILACS) and reference lists.
• Included randomized controlled trials (RCTs) comparing vasectomy techniques.
• Assessed titles and abstracts; two reviewers independently extracted data on contraceptive efficacy, safety, discontinuation, and acceptability.

Main Results:

• Six RCTs were included. Vas occlusion with clips showed no difference in azoospermia rates compared to conventional methods.
• Vasectomy with irrigation (water or euflavine) did not differ in time to azoospermia, though euflavine showed a lower median ejaculation count.
• Fascial interposition reduced vasectomy failure but increased surgical difficulty; side effects were similar.
• Intra-vas devices were less likely to achieve azoospermia than no-scalpel vasectomy, though user satisfaction was higher.

Conclusions:

• Low-quality studies preclude conclusions on vas occlusion with clips or vas irrigation.
• Fascial interposition is effective in reducing vasectomy failure.
• Intra-vas devices are less effective for sperm count reduction compared to no-scalpel vasectomy.
• More high-quality RCTs are needed to evaluate various vasectomy techniques.