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levonorgestrel implant

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levonorgestrel implant
(lēv´norjes´trl),
n brand name: Norplant System;
drug class: contraceptive system;
action: as a progestin, transforms proliferative endometrium into secretory endometrium; inhibits secretion of pituitary gonadotropins, which prevents follicular maturation and ovulation;
use: prevention of pregnancy.


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For older women, levonorgestrel implants may be a better contraceptive option than progestin-only injections because they continuously release hormones in lower doses and for longer periods of time.
nbsp;or oral contraception in postpartum adolescents, Obstetrics & Gynecology, 1998, 91(4):609-614; and Stevens-Simons C and Kelly L, Correlates and consequences of early removal of levonorgestrel implants among teenaged mothers, Archives of Pediatric and Adolescent Medicine, 1998, 152(9):893-898.
Evaluation of active and passive transport mechanisms in genital tracts of IUD-bearing women with radionuclide hysterosalpingoscintigraphy, Contraception, 2001, 63(1):41-45; Meirik O, Farley TM and Sivin I, Safety and efficacy of levonorgestrel implant, intrauterine device, and sterilization, Obstetrics & Gynecology, 2001, 97(4):539-547; and Shelton JD, Risk of clinical pelvic inflammatory disease attributable to an intrauterine device, Lancet, 2001, 357(9254):443.
 
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