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


Merki-Feld, G S; Imthurn, B; Seifert, Burkhardt (2008). Effects of the progestagen-only contraceptive implant Implanon® on cardiovascular risk factors. Clinical Endocrinology, 68(3):355-360.

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.

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.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Epidemiology, Biostatistics and Prevention Institute (EBPI)
04 Faculty of Medicine > University Hospital Zurich > Clinic for Reproductive Endocrinology
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2008
Deposited On:03 Nov 2008 15:09
Last Modified:05 Apr 2016 12:29
Publisher:Wiley-Blackwell
ISSN:0300-0664
Publisher DOI:https://doi.org/10.1111/j.1365-2265.2007.03046.x
PubMed ID:17854390

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