Early chorionic activity in women bearing inert IUD, copper IUD and levonorgestrel-releasing IUD.
Contraception
; 36(2): 217-26, 1987 Aug.
Article
em En
| MEDLINE
| ID: mdl-3123135
ABSTRACT
PIP: Early chorionic activity was compared in 100 IUD users (inert device, copper IUD, and a levonorgestrel-releasing IUD) and 22 controls through measurement of the serum human chorionic gonadotropin (hCG) beta-fraction. In the control group, 7 (32%) of the 22 women had hCG beta-fraction values indicative of chorionic activity (i.e., 5mIU/ml). In the group of women wearing an inert IUD (Lippes Loop), 8 (20%) were positive for early chorionic activity. In contrast, the incidence of premenstrual chorionic activity signs was very low among women with medicated IUDs: 5% among acceptors of the copper IUD and zero among women in the levonorgestrel-releasing IUD group. In general, elevated premenstrual hCG values are indicative of failed implantation. The high incidence of hCG activity recorded among Lippes Loop acceptors in this study is consistent with the anti-implantation effect postulated for inert devices. In contrast, medicated IUDs appear to act by preventing rather than interrupting implantation and therefore should not be regarded as abortifacient contraceptive agents.
Palavras-chave
Biology; Comparative Studies; Contraception; Contraceptive Methods; Contraceptive Mode Of Action; Endocrine System; Family Planning; Fertilization; Gonadotropins; Gonadotropins, Chorionic; Hormones; Implantation; Implantation Suppression; Iud; Iud, Copper Releasing; Iud, Hormone Releasing; Iud, Unmedicated; Physiology; Pregnancy; Pregnancy, First Trimester; Reproduction; Reproductive Control Agents; Research Methodology; Studies
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Córion
/
Anticoncepcionais Femininos
/
Gonadotropina Coriônica
/
Dispositivos Intrauterinos Medicados
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Dispositivos Intrauterinos de Cobre
/
Norgestrel
Limite:
Adult
/
Female
/
Humans
Idioma:
En
Revista:
Contraception
Ano de publicação:
1987
Tipo de documento:
Article
País de afiliação:
Argentina
País de publicação:
Estados Unidos