Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't
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Safety of the etonogestrel-releasing implant during the immediate postpartum period: a pilot study.

Contraception 2009 December
BACKGROUND: The effects of etonogestrel (ETG)-releasing contraceptive implant during the immediate postpartum period on maternal safety are unknown.

STUDY DESIGN: Forty healthy women exclusively breastfeeding were randomized to receive either ETG-releasing implant 24-48 h after delivery (n=20) or depot medroxyprogesterone acetate (DMPA group; n=20) at the sixth week postpartum. We measured blood pressure, maternal and neonatal weight, body mass index (BMI; kg/m(2)), waist circumference (WC), complete blood count, C-reactive protein, interleukin-6, tumor necrosis factor (TNF-alpha), lipid profile, fasting serum glucose and maintenance of exclusive lactation up to the 12th week postpartum.

RESULTS: Decreases in mean maternal weight, BMI (kg/m(2)) and WC were significantly greater in the ETG-releasing implant group than in the DMPA group during the first 6 weeks postpartum (-4.64+/-2.71 kg vs. -2.6+/-2.45 kg mean+/-SD, p=.017; -1.77+/-1.06 kg/m(2) vs. -0.97+/-0.95 kg/m(2), p=.026; -15.3+/-6.72 cm vs. -9.05+/-5.84 cm, p=.003, respectively). In addition, total cholesterol and HDL, were lower in DMPA users, and TNF-alpha and leukocytes were higher in DMPA users compared to in the implant group, between 6 and 12 weeks after delivery. The newborns of implant users showed a trend towards gaining more weight, as compared with the infants of the DMPA mothers during the first 6 weeks of life (implant group: +1460.50+/-621.34 g vs. DMPA group: +1035.0+/-562.43 g, p=.05). The remaining variables, including the duration of exclusive breastfeeding, were similar between the groups.

CONCLUSION: The insertion of ETG-releasing contraceptive implant during the immediate postpartum period was not associated with deleterious maternal clinical effects or with significant maternal metabolic alterations or decreased infant weight gain.

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