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IPPF MEDICAL BULLETIN. 1993 Jun; 27(3):1-2.Sterilization consists of occlusion of the vas deferentia or the Fallopian tubes to prevent the sperm and ovum from joining. Counseling is important since voluntary surgical and contraception is a permanent contraceptive method. Trained counselors should know about and discuss other contraceptive methods, the types of anesthesia available, and the different sterilization procedures and stress the permanent nature of sterilization and the minimal risk of failure. Counseling must maintain voluntary, informed consent and not coerce anyone to undergo sterilization. It is best to counsel both partners. Vasectomy should be encouraged because it is simpler and safer than female sterilization. Most sterilization techniques are simple and safe, allowing physicians to conduct them on an outpatient basis. Local anesthesia and light sedation are the preferable means to reduce pain and anxiety. In cases where general anesthesia is required, the patient should fast for at least 6 hours beforehand and the health facility must have emergency resuscitation equipment and people trained in its use available. Aseptic conditions should b maintained at all times. Vasectomy is not effective until azoospermia has been achieved, usually after at least 15 ejaculations. The no-scalpel technique causes less surgical trauma, which should increase the acceptability of vasectomy. Vasectomy complications may be hematoma, local infection, orchitis, spermatic granuloma, and antisperm antibodies. Spontaneous recanalization of the vasa is extremely rare. Postpartum sterilization is simpler and more cost-effective than interval sterilization. Procedures through which physicians occlude the Fallopian tubes include minilaparotomy, laparoscopy, and vaginal sterilization via colpotomy or culdoscopy. They either ligate the Fallopian tubes or apply silastic rings or clip to them. Vaginal sterilization is the riskiest procedure. Reversal is more likely with clips. So complications from female sterilization are anesthetic accidents, wound infection, pelvic infection, and intraperitoneal hemorrhage. About 1% of all sterilization clients request reversal. Pregnancy rates are low with reversal.
Association for Voluntary Sterilization - Consultant Team. Trip report: the People's Republic of China, Beijing, Chongqing, Wuhan, Guangzhou, June 19-30, 1985.
[Unpublished] 1985. 41,  p.The Association for Voluntary Sterilization consultant team visited Beijing, Chongqing, Wuhan and Guangzhou, China in June 1985, to review innovative nonsurgical methods of male and female sterilization. There are 2 variations on vasectomy, performed with special clamps that obviate a surgical incision. The 1st is a circular clamp for grasping the vas through the skin, and the 2nd is a small, curved, sharp hemostat for puncturing the skin and the vas sheath, used for ligation. Vas occlusion with 0.02 ml of a solution of phenol and cyanoacrylate has been performed on 500,000 men since 1972. The procedure is done under local anesthesia, and is controlled by injecting red and blue dye on contralateral sides. If urine is not brown, vasectomy by ligature is performed. The wound is closed with gauze only. Semen analysis is not done, but patients are advised to use contraception for the 1st 10 ejaculations. Pregnancy rates after vasectomy by percutaneous injection were reported as 0 in 5 groups of several hundred men each, 11.4% in 1 group and 2.4% in another group. The total complication rate after vasectomy by clamping was 1.8% in 121,000 men. 422 medical school graduates with surgical training have been certified in this vasectomy method. Chinese men are pleased with this method because it avoids surgery by knife, and asepsis, anesthesia and counseling are excellent. Female sterilization by blind transcervical delivery of a phenol-quinacrine mixture has been done on 200,000 women since 1970 by research teams in Guangzhou and Shanghai. A metal cannula is inserted into the tubal opening, tested for position by an injection of saline, and 0.1-0.12 ml of sclerosing solution is instilled. Correct placement is verified by x-ray, an IUD is inserted, and after 3 months a repeat hysteroscopy is done to test uterine pressure. Pregnancy rates have been 1-2.5%, generally in the 1st 2 years. Although this technique is tedious, requiring great skill and patient cooperation, it can be mastered by paramedicals. The WHO is assisting the Chinese on setting up large studies on safety and effectiveness, as well as toxicology studies needed, to export the methods to other countries.