[OMGA XXXX : prescribe or proscribe (author's transl) (letter)].

@entity1 @entity281 @entity920 @entity9414
The author, who helped develop the OMGA IUD in 1966, presents data on the effectiveness and tolerance of the OMGA @entity920 IUD. From July 1980-February 1982, 180 insertions were done, yielding a total of 2302 months of use through May 1982. 26 OOT, 78 OT, 67 IT, and 9 2T devices were included. There were 19 expulsions, 1 removal for metrorragia, 4 pregnancies, 1 @entity281 ( @entity9414 ). Minor problems associated with IUD use were not considered. The Pearl index of 2.08% was higher than that obtained in 1970 with inert OMGA IUDs. The same findings were noted at endometrial biopsies after 1 year of use of OMGA @entity920 devices as had been found with the inert devices. The number of expulsions (10.55% on average for the 4 models) was significant, despite precautions to adjust IUDs to the uterine cavity. The proportion of expulsions varied from 3.84% for the OOT and OT, 16.66% for the IT, to 22.22% for the 2T. In addition, 2 2T IUDs rotated 90 degrees 6 months after insertion, but without requiring removal. No pregnancies occurred with the OOT, 2 with the OT, 1 in a 36-year old @entity1 after 15 months and 1 in a 39-year old @entity1 after 7 months; 2 with the IT, 1 in a 36-year old after 7 months and 1 in a 43-year old after 16 months. No uterine pregnancies occurred with the 2T but ectopic pregnancy occurred in a 45-year old @entity1 after 4 months. It is hazardous to predict the in vivo experience of OMGA @entity920 devices based on in vitro experiments, but it appears that after the disappearance of the @entity920 the device becomes an inert OMGA and may be left in place for several years without problems for @entity1 over 40.
