A comprehensive review of the sequelae of male sterilization

Vasectomy and male sexual dysfunction risk: A systematic review and meta-analysis

BACKGROUND

Unintended pregnancy is popular all over the world, accounting for 40% to 50% of all pregnancies. The condition not only exerts pressure on the relationship of couples and severely impacts the quality of life, but also imposes a heavy burden on the health of women and child. Recently, more than 220 million couples have chosen to be sterilized to obtain contraception, 47.3% of married couples select sterilization, of which vasectomy accounts for 17.1%. Vasectomy is currently the most convenient and effective method of male contraception. We will perform the systematic review and meta-analysis to assess the correlation between vasectomy and male sex dysfunction and provide evidence-based evidence for the couple METHODS:: The electronic databases of MEDLINE, PubMed, Web of Science, EMBASE, Clinicaltrials.org., China National Knowledge Infrastructure Database (CNKI), Wan fang Database, China Biology Medicine Database (CBM), VIP Science Technology Periodical Database, Chinese Clinical Trial Registry, and Cochrane Library will be retrieved before November 20, 2021. We will search English literature and Chinese literature with proper Medical Subject Heading or text key words. RevMan 5.3 and Stata 14.0 will be used for Systematic review and Meta-analysis. This protocol reported in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols (PRISMA-P) statement, and we will report the systematic review by following the PRISMA statement.

CONCLUSION AND DISSEMINATION

The aim of this study was to evaluate the effect of vasectomy on the sexual function of patients after operation. The results will be published in a public issue journal to provide evidence-based medical evidence for urologists and andrologists to make clinical decisions.

REGISTRATION INFORMATION

INPLASY202080014.

Open/close-ended vasectomy technique by single incision on vervet monkeys (Chlorocebus pygerythrus)

Vervet monkeys (Chlorocebus pygerythrus), considered a species of "least concern" by the International Union for Conservation of Nature (IUCN), are widely maintained at primate sanctuaries in South Africa. Permanent surgical contraception is a necessary method for the management of this species in captivity. In this study, a new vasectomy technique was evaluated and involves a prescrotal approach with only one surgical incision, aiming to excise a piece of vas deferens, leaving open the testicular side, and creating a loop on the prostatic side to avoid future recanalization. The birth rate was studied to assess the success of the technique. This technique significantly reduced breeding in the study population from 33 births in the first year to four births during the last year of the study. These results show that this type of vasectomy is a fast, simple, and safe technique for controlling monkey populations in sanctuaries.

Assessment of sexual function in patients undergoing vasectomy using the international index of erectile function

INTRODUCTION

The present study aims to prospectively compare the sexual function in males before and after vasectomy surgery using the international index of erectile function (IIEF).

MATERIALS AND METHODS

From October to December 2002, sixty-four patients who were candidates for male sterilization in the vasectomy program of the Urology Section at the General Hospital of the University of São Paulo were included. The same investigator applied the IIEF before and 90 days after the surgery. The mean scores obtained on pre and postoperative visits for all domains of sexual function were analyzed and compared with the Wilcoxon test.

RESULTS

The mean patient age was 35 years (range from 25 to 48 years) and the mean number of children per man was 3. The total mean score of the IIEF was 64.06 before surgery and 65.64 after the procedure, with this difference considered statistically significant (p < 0.001). Sixty-seven per cent of the patients improved their scores, versus 17% and 16% who showed worsening or no change at all in IIEF scores following surgery, respectively. Of the 5 sexual function domains, desire and sexual satisfaction presented statistically significant improvement.

CONCLUSION

This study showed that vasectomy caused a positive impact on sexual function, especially on desire and sexual satisfaction, in the majority of men undergoing surgery. There was no case of surgery-related erectile dysfunction.

No-scalpel vasectomy at the King's birthday vasectomy festival

No-scalpel vasectomy was developed to increase acceptability of vasectomy by elimination of the fear of the incision. Although this method has been used for over 8,000,000 men, the technique is largely unknown in developed countries. During the King's birthday vasectomy festival no-scalpel vasectomy was compared with standard incisional vasectomy in 1203 patients. An average of 57 procedures per day could be done by each physician with the no-scalpel method, compared to 33 procedures with the standard method (p less than 0.001). The complication rate was 0.4/100 procedures for no-scalpel vasectomy compared with 3.1/100 for standard vasectomy (p less than 0.001). No-scalpel vasectomy is a rapid and economic alternative to standard vasectomy, with fewer complications and increased patient acceptability.

Diverticula of the ductus epididymis in men

The histological study of epididymides obtained from autopsies (41 children, 7 young adults and 8 elderly men) and surgical specimens (10 young adults and 3 elderly men) revealed the presence of multiple diverticula in the cauda epididymis in all elderly men and in only 2 young adults (32 and 33 years old). The diverticula appeared as evaginations of the epithelial lining of the duct, disrupting the muscular coat and expanding into the surrounding connective tissue. The formation of epididymal diverticula seems to be an age-related process that might be caused by repeated increases in the intraluminal pressure in the cauda epididymis.