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Techniques for the interruption of tubal patency for female sterilisation.
BACKGROUNDFemale sterilization is the most popular contraceptive method worldwide. Several techniques are described in the literature, however only few of them are commonly used and properly evaluated.
OBJECTIVESTo compare the different tubal occlusion techniques in terms of major and minor morbidity, failure rates (pregnancies), technical failures and difficulties and women's and surgeons' views.
SEARCH STRATEGYThe Cochrane Controlled Trials Register has been searched. A search of the reference lists of identified trials was performed. An additional MEDLINE search was done using an Internet search service Pub Med.
SELECTION CRITERIAAll randomized controlled trials comparing different techniques for tubal sterilization, regardless of the way of entry in the abdominal cavity or the method of anesthesia.
DATA COLLECTION AND ANALYSISTrials under consideration were evaluated for methodological quality and appropriateness for inclusion. Nine relevant studies were included and the results were stratified in five groups: tubal ring versus clip, modified Pomeroy versus electrocoagulation, tubal ring versus electrocoagulation, modified Pomeroy versus Filshie clip and Hulka versus Filshie clip. Results are reported as odds ratio for dichotomous outcomes and weighted mean differences for continuous outcomes.
MAIN RESULTSTubal ring versus clip: Minor morbidity was higher in the ring group (Peto OR 2.15; 95% CI 1.22, 3.78). Technical difficulties were found less frequent in the clip group ( Peto OR 3.87; 95% CI 1.90, 7.89). There was no difference in failure rates between the two groups (Peto OR 0.70; 95% CI 0.28, 1.76). Pomeroy versus electrocoagulation: Women undergoing modified Pomeroy technique had higher major morbidity than with electrocoagulation technique (Peto OR 2.87; 95% CI 1.13, 7.25). Postoperative pain was more frequent in the Pomeroy group (Peto OR 3.85; 95% CI 2.91, 5.10). Tubal ring versus electrocoagulation: Post operative pain was more frequently reported in the tubal ring group. No pregnancies were reported. Pomeroy versus Filshie clip: In the trial comparing the two interventions only one pregnancy was reported in the Pomeroy group after follow-up for 24 months. No differences were found when comparing Hulka versus Filshie clip in the only study that compared these two devices (Toplis 1988).
REVIEWER'S CONCLUSIONSElectrocoagulation was associated with less morbidity when compared with tubal ring and other methods. However the risk of burns to the small bowel might be a serious criticism of the approach. The small sample size and the relative short period of follow-up in these studies limited the power to show clinical or statistical differences for rare outcomes such as failure rates. Aspects such as training, costs and maintenance of the equipment may be important factors in deciding which method to choose.
The Cochrane database of systematic reviews :1 2003 pg CD003034
Randomized Controlled Trials as Topic
Pub Type(s)Journal Article