Resumen
Background To provide an overview of the available data from clinical studies of vaginal
conditions in women who use a vaginal ring as a contraceptive.
Methods A systematic review of the literature. Results Millions of women have already used the ethylene vinyl acetate vaginal ring that releases ethinylestradiol and etonogestrel for contraception. Because of its small size, more than four out of five women using the ring report that they do not feel it, even during
sexual intercourse. No colposcopic or cytological changes have been observed in users,
although approximately 10% have increased vaginal discharge. While in vitro studies have
shown adhesion of Candida yeasts to the vaginal ring surface, clinical studies have not
demonstrated a greater incidence of Candida infections compared to users of equivalent
oral contraceptives. Some clinical studies suggest a lower incidence of bacterial vaginosis.
No interaction exists between concomitant use of the vaginal ring and other drugs or
products for vaginal use. Conclusion The use of a contraceptive vaginal ring does not alter the vaginal ecosystem and therefore does not substantially affect vaginal health