Vasectomy occlusion techniques for male sterilization.

Area of Science:

• Urology
• Family Planning
• Surgical Techniques

Background:

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

Purpose of the Study:

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

Main Methods:

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

Main Results:

• Two low-quality trials on vas occlusion with clips found no difference in azoospermia rates compared to conventional methods.
• Four low-quality trials on vas irrigation showed no significant difference in time to azoospermia, though one noted fewer ejaculations to azoospermia with euflavine.
• One high-quality trial indicated fascial interposition improved vasectomy success (azoospermia) but increased surgical difficulty.

Conclusions:

• Insufficient evidence exists to conclude on the effectiveness, safety, or cost of vas occlusion or irrigation due to low-quality, underpowered studies.
• Fascial interposition appears to enhance vasectomy success but presents greater surgical challenges.
• More RCTs are needed to evaluate various vasectomy techniques for male sterilization.