[The intra-operative proof of occlusion of the tubes in tubal sterilizations (author's transl)].

In tubal sterilization operations with a plastic clip failures with subsequent pregnancies become only known by misplacement of the clips. Failures are more frequent when the clips are placed through a posterior colpotomy. In 163 laparoscopic tubal sterilization with the Tuplar-clip during the last 2 1/2 years no subsequent pregnancy was observed. The carbon-dioxide pertubation or the chromo-pertubation after occlusion of the tubes with a clip permits an immediate intra-operative proof of secure bilateral tubal occlusion. A pregnancy due to faulty placement of the clip is then no longer possible. Other advantages of this method of tubal sterilization are mentioned.