Effects of the progestagen-only contraceptive implant Implanon on cardiovascular risk factors.

Abstract:

OBJECTIVE:Epidemiological studies on the cardiovascular risk of progestagen-only contraceptives are rare. With the present study we aimed to investigate the effect of the low-dose etonogestrel-releasing contraceptive implant Implanon on cardiovascular risk factors, including markers of inflammation. DESIGN:Longitudinal study. SETTING:Family planning centre of a University Hospital. SUBJECTS:Thirty-six healthy, nonsmoking women with regular cycles (n = 18 controls without hormonal contraception; n = 18 cases requesting the insertion of Implanon. MEASUREMENTS:Blood samples for the determination of C-reactive protein (CRP), nitric oxide (NO), sex hormones and plasma lipids were taken in the early follicular phase of the cycle in both groups. A second sample was taken 12 weeks after Implanon insertion or in the controls during the early follicular phase of cycle 4. RESULTS:Implanon treatment caused a 36% decrease in CRP (P < 0.06) and a significant decrease in high density lipoprotein (HDL) (P < 0.007), low density lipoprotein (LDL) (P < 0.001), cholesterol (P < 0.001), testosterone (P < 0.05) and SHBG (P < 0.002). Levels of NO, oestradiol and progesterone were not affected in either group. The cholesterol/HDL ratio did not change in Implanon carriers. There was a significant correlation between the cardiovascular risk factors CRP, cholesterol/HDL ratio and NO. CONCLUSION:The progestagen-only implant Implanon does not exert a negative effect on the cardiovascular risk factors CRP, cholesterol/HDL ratio and NO. These results suggest that the use of a progestagen-only contraception does not increase cardiovascular risk factors in healthy young women.

journal_name

Clin Endocrinol (Oxf)

journal_title

Clinical endocrinology

authors

Merki-Feld GS,Imthurn B,Seifert B

doi

10.1111/j.1365-2265.2007.03046.x

subject

Has Abstract

pub_date

2008-03-01 00:00:00

pages

355-60

issue

3

eissn

0300-0664

issn

1365-2265

pii

CEN3046

journal_volume

68

pub_type

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