title: Norplant-2 rods contraceptive subdermal implants: two-year experience in Singapore.
abstract: Norplant-2 contraceptive implants consist of two Silastic rods in which levonorgestrel has been incorporated with the polymer. This on-going study describes our two-year experience with 100 acceptors of Norplant-2 rods in Singapore. No pregnancies occurred during the first two years of use. Desire for planned pregnancy and menstrual irregularities accounted for 86.4% of the removals during this period. The continuation rate at the end of two years was 78%. The post-removal conception rate in women desiring planned pregnancy was 54.5% at the end of one year. Apart from this apparent slow return of fertility requiring future close surveillance, it appears that the Norplant-2 rod system offers a highly effective and convenient means of contraception.
authors.affiliation: Department of Obstetrics and Gynaecology, National University of Singapore.
authors.forename: K
authors.initials: K
authors.lastname: Singh
authors.forename: O A
authors.initials: OA
authors.lastname: Viegas
authors.forename: P
authors.initials: P
authors.lastname: Singh
authors.forename: S S
authors.initials: SS
authors.lastname: Ratnam
mesh_terms: D000293:Adolescent; D000328:Adult; D001794:Blood Pressure / Q000187:drug effects; D001835:Body Weight / Q000187:drug effects; D003271:Contraceptive Agents, Female / Q000494:pharmacology*; D004343:Drug Implants; D005260:Female; D006801:Humans; D016912:Levonorgestrel; D008597:Menstrual Cycle / Q000187:drug effects; D009644:Norgestrel / Q000494:pharmacology*; D012826:Silicone Elastomers; D012846:Singapore
chemical_list: D003271:Contraceptive Agents, Female; D004343:Drug Implants; D012826:Silicone Elastomers; D009644:Norgestrel; D016912:Levonorgestrel