Results 181 to 190 of about 785,437 (225)
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Seminars in Reproductive Medicine, 2001
Contraceptive vaginal rings (CVRs) contain sex steroids that diffuse through a plastic polymer ring at a constant rate and are absorbed directly through the vaginal epithelium into the systemic circulation. This delivery system provides many advantages over oral contraceptives (OCs), including avoidance of the first-pass effect through the liver ...
B, Harwood, D R, Mishell
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Contraceptive vaginal rings (CVRs) contain sex steroids that diffuse through a plastic polymer ring at a constant rate and are absorbed directly through the vaginal epithelium into the systemic circulation. This delivery system provides many advantages over oral contraceptives (OCs), including avoidance of the first-pass effect through the liver ...
B, Harwood, D R, Mishell
openaire +2 more sources
Clinical Obstetrics & Gynecology, 2007
The vaginal contraceptive ring is comprised of ethinyl vinyl acetate that releases ethinyl estradiol and the third-generation progestin, etonorgestrel. It was approved by the Food and Drug Administration in 2001. The vaginal contraceptive ring is highly efficacious with a Pearl Index of 1.18 and an efficacy of 99.1%.
Tessa, Madden, Paul, Blumenthal
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The vaginal contraceptive ring is comprised of ethinyl vinyl acetate that releases ethinyl estradiol and the third-generation progestin, etonorgestrel. It was approved by the Food and Drug Administration in 2001. The vaginal contraceptive ring is highly efficacious with a Pearl Index of 1.18 and an efficacy of 99.1%.
Tessa, Madden, Paul, Blumenthal
openaire +2 more sources
Contraceptive vaginal rings: a review
Contraception, 2010Development efforts on contraceptive vaginal rings were initiated over 40 years ago based on two principles: the capacity of the vaginal epithelium to absorb steroids and the capacity of elastomers to release these hormones at a nearly constant rate. Numerous models of contraceptive vaginal rings (CVRs) have been studied, but only two have reached the ...
Vivian, Brache, Anibal, Faundes
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Vaginal Ring an HT Alternative
The Nurse Practitioner, 2004On May 31 2002 the Womens Health Initiative (WHI) announced that the combined estrogen and progestin arm of the study was halted because the numbers of breast cancers blood clots and cardiac events exceeded the preset limits. In February 2004 the estrogen-only arm of the study was stopped as well thus ending the intervention phase of the study.
Mary M, Cothran, Sandra, Engberg
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Advances in microbicide vaginal rings
Antiviral Research, 2010Vaginal ring devices capable of providing sustained/controlled release of incorporated actives are already marketed for steroidal contraception and estrogen replacement therapy. In recent years, there has been considerable interest in developing similar ring devices for the administration of microbicidal compounds to prevent vaginal HIV transmission ...
Malcolm, Karl +4 more
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The Vaginal Ring: Expelled or Misplaced?
Journal of Ultrasound in Medicine, 2009aginal administration of hormones, contraceptive or replacement hormone therapy, is rising in market popularity. The vaginal ring, or NuvaRing (Organon USA Inc, Roseland, NJ), is estimated to have more than 1 million users in more than 25 countries, including the United States and Canada.
Mousumi, Bhaduri +3 more
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The Contraceptive Vaginal Ring
2020Contraceptive vaginal rings (CVR) are plastic polymer rings containing sex steroids that are directly absorbed through the vaginal epithelium into systemic circulation for highly effective contraception without the need for daily dosing. There are currently two CVRs that are FDA-approved for use in the United States. The ENG/EE ring (NuvaRing) contains
Rachel S. Mandelbaum, Donna Shoupe
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Contraceptive Vaginal Ring: Nuvaring
Research Journal of Science and Technology, 2022For more than four decades ago, researchers began developing Vaginal contraceptive rings characterized by two guiding principles: the ability vaginal epithelium is made up of a layer of cells that line within the structure vaginal canal ingest the application of steroid ability of elastomers to release hormones at a virtually constant rate.
Kunal M. Agavane, Sonal B. Ombase
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Vaginal rings for contraception in lactating women
Steroids, 2000Contraceptive methods for breastfeeding women should be safe for the mother and infant and should not interfere with lactation. Progestin-only methods meet these conditions and can be used from the sixth week postpartum. Because all progestins are excreted in milk, those that are insufficiently active by the oral route are preferable to avoid any ...
R, Massai +3 more
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Current status of contraceptive vaginal rings
Contraception, 2013Contraceptive vaginal rings (CVR) offer a new, effective contraceptive option, expanding the available choices of hormonal contraception. Various ring prototypes have been evaluated: progestin-only rings and combined progestin-estrogen rings, as well as different combination of progestins and estrogens.
Vivian, Brache +2 more
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