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pubmed:otherAbstract |
PIP: The effect of postpartum Norplant implant use on coagulation factors was investigated in a prospective study conducted in Mississippi, US. 85 postpartum women were given a choice of 3 contraceptive methods: levonorgestrel implants (n = 25), oral contraceptives (n = 38), or a barrier method (n = 22). Antithrombin-III (AT-III) levels were measured on the day of discharge from the hospital after delivery, 7 days after delivery, and 6 weeks after delivery. There was no significant difference between groups in the initial AT-III level (mean, 100.35 +or- 1.61%). At the end of the first postpartum week, AT-III levels rose significantly to 109.1 +or- 1.89%, but again, there were no significant differences according to contraceptive method. By the 6-week follow-up, AT-III levels had stabilized at a mean of 105.51 +or- 1.71%, with no significant between-group differences. AT-III levels in pill users declined more markedly between the first and sixth postpartum weeks than those in the 2 other groups. These findings indicate that subdermal implant use does not affect coagulation, and these devices can be inserted safely during the postpartum period.
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