[Levonorgestrel releasing subcutaneous implants. 1st year's experience]. / Implantes subdérmicos liberadores de levonorgestrel. Primer año de experiencia.

This multicentric study was done in order to know the contraceptive efficacy and side effects of subdermal implants liberating levonorgestrel, in Mexican women. Results analysis, at one year, of 246 women, at four medical centers of Mexican Institute of Social Security (IMSS), showed that this contraceptive is highly efficacious, as there were no pregnancies in 2326 months of observation. The main side effects were: menstrual disorders in 34.8% of women; soreness in implantation site in 3.6%; headache in 13.4% and nausea, dizziness and vomiting in 11.6%. The most frequent causes for implant retirement were menstrual cycle alterations, and soreness at implantation site, with 7.3 and 3.5 respectively. The continuity rate at one year was 84.3, which was higher to what has been seen at the Institution with other temporal contraceptive methods, so the implants may be considered as one more alternative in family planning methods.

[Levonorgestrel-releasing subcutaneous implants. First year's experience]. / Implantes subdérmicos liberadores de levonorgestrel. Primer año de experiencia.

This multicentric study was done in order to know the anticonceptive efficacy and side effects of subdermic implants liberating levonorgestrel, in Mexican women. Results analysis, at one year, of 246 women, at four medical centers of Mexican Institute of Social Security (IMSS), showed that this anticonceptive is highly efficacious, as there were no pregnancies in 2326 months of observation. The main side effects were: menstrual disorders in 34.8% of women; soreness in implantation site in 3.6%; headache in 13.4% and nausea, dizziness and vomiting in 11.6%. The most frequent causes for implant retirement were menstrual cycle alterations, and soreness at implantation site, with 7.3 and 3.5 respectively. The continuity rate at one year was 84.3, which was higher to what has been seen at the Institution with other temporal anticonceptive methods, so the implants may be considered as one more alternative in family planning methods.

[Application of intrauterine devices preceded by measurement of the endometrial cavity using a Hollister sound]. / Estudio sobre la aplicación de dispositivos intrauterinos previa medición de la cavidad endometrial con la sonda Hollister.

PIP: The frequency of IUD expulsion, pregnancy, and removal was studied in 694 users. Those IUD types examined were the Lippes Loop D, Copper T-device, the 220C, and the T releasing 65 mcg of progesterone. A comparison was done as to the length of the uterine cavity, measured by a Hollister device which tends to be very accurate. Other authors have described certain length limits in the uterine cavity beyond which the number of pregnancies, expulsions, and removals are greater, but this was not confirmed in the present study. The only statistically significant difference was reduced frequency of such events in those women using the Copper T as compared with the Lippes Loop, independent of uterine cavity length. (author's modified)^ieng

Estudio sobre la aplicacion de dispositivos intrauterinos previa medicion de la cavidad endometrial con la sonda Hollister. / Implantation of intrauterine devices with previous measurement of the endometrial cavity using a Hollister catheter

Se efectuo un estudio comparativo entre la frecuencia de los eventos expulsion, embarazo y retiros por razones medicas en 694 usuarias portadoras de dispositivos intrauterinos asa de Lippes D, Tcu 220C y T liberadora de 65 mcg. de progesterona en relacion con la longitud de la cavidad uterina, medida con la sonda de Hollister, la cual permite una medicion mas exacta de esta dimension del utero. A pesar de que otros autores han descrito ciertos limites de longitud de la cavidad uterina, fuera de los cuales las tasas de embarazos, expulsion y retiro son mayores, esto no pudo confirmarse en nuestro estudio. La unica diferencia con significacion estadistica encontrada fue una menor frecuencia de los eventos mencionados en las mujeres portadoras de T, comparadas con el grupo que uso asa de Lippes, independientemente de la longitud de la cavidad uterina

[Cyclic concentration of estradiol and progesterone in hysterectomized women (author's transl)]. / Concentracíon cíclica de estradiol y progesterona en mujeres histerectomizadas

PIP: The cyclic concentration of estradiol and progesterone was studied in 6 women, 30 years of age or less, who underwent hysterectomy, 7 to 14 months earlier, because of obstetrical complications. The basal body temperature curve, as well as the daily concentrations of plasma estradiol and progesterone during one cycle, showed a pattern similar to that of the control group, except for 2 women with a luteal phase of 16 days, who had progesterone levels of 5 ng/ml or more. Although these values are indicative of ovulation, they fell in the lower limit of the range considered as ovulatory in the laboratory that conducted the test. It is concluded that hysterectomy, with the interruption of the circulation of the ovaric branch of the uterine artery, does not affect the normal esteroidogenic function of the ovary.^ieng