Preregistration study on the safety and contraceptive efficacy of a progesterone-releasing vaginal ring in Chilean nursing women

Rebeca Massai, P. Miranda, P. Valdés, P. Lavín, A. Zepeda, M. E. Casado, M. A. Silva, G. Fetis, C. Bravo, O. Chandía, O. Peralta, H. B. Croxatto, S. Díaz

Resultado de la investigación: Contribución a una revistaArtículo

44 Citas (Scopus)

Resumen

The contraceptive efficacy and safety of a progesterone-releasing vaginal ring (PVR) manufactured in Chile were compared to that of the Copper T 380A IUD (T-Cu) in nursing women enrolled at three Chilean clinics. A total of 285 volunteers chose to use the PVR and 262 the T-Cu. Plasma progesterone levels attained with the ring decreased from 25 to 14 nmol/L from month 1 to month 3 of use. Ring replacement was scheduled every 3 months. Volunteers continued in the study until weaning or completing the continuous use of four PVRs. No pregnancies occurred in 2320 and 2183 woman-months of exposure with the PVR and the T-Cu, respectively. Lower continuation rates in the first 6 months because of problems with use and a longer lactational amenorrhea were observed in the PVR than in the T-Cu group. Breast-feeding performance and infant growth were similar in both groups. These results confirm the high efficacy and safety of the PVR for nursing women and have led to the registration of the PVR by Chilean health authorities.

Idioma originalInglés
Páginas (desde-hasta)9-14
Número de páginas6
PublicaciónContraception
Volumen60
N.º1
DOI
EstadoPublicada - 1 jul 1999

Áreas temáticas de ASJC Scopus

  • Medicina reproductiva
  • Ginecología y obstetricia

Huella Profundice en los temas de investigación de 'Preregistration study on the safety and contraceptive efficacy of a progesterone-releasing vaginal ring in Chilean nursing women'. En conjunto forman una huella única.

  • Citar esto

    Massai, R., Miranda, P., Valdés, P., Lavín, P., Zepeda, A., Casado, M. E., Silva, M. A., Fetis, G., Bravo, C., Chandía, O., Peralta, O., Croxatto, H. B., & Díaz, S. (1999). Preregistration study on the safety and contraceptive efficacy of a progesterone-releasing vaginal ring in Chilean nursing women. Contraception, 60(1), 9-14. https://doi.org/10.1016/S0010-7824(99)00057-8