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Hormonal consequences oe missing the pill during the first two days of three consecutive artificial cycles

Authors
Journal
Contraception
0010-7824
Publisher
Elsevier
Publication Date
Volume
29
Issue
5
Identifiers
DOI: 10.1016/0010-7824(84)90017-9

Abstract

Abstract The hormonal effects of the deliberate omission of a low-dose combined oral contraceptive pill (30 μg ethinyl estradiol + 150 μg levonorgestrel) during the first two days of three consecutive artificial cycles were studied in 10 women. The plasma levels of estradiol, progesterone, levonorgestrel and — whenever juistified — of LH were measured three times weekly (Mondays, Wednesdays and Fridays) throughout a 90-day period, and the ovarian reaction to the prolongation of the pill-free period from 7 to 9 days was assessed. One subject (with a premature LH surge) showed a marked follicular and an inadequate luteal activity in 2 of 3 cycles. The remaining cycles were characterized by a varying degree of follicular activity associated with the absence of any luteal function. None of the subjects exhibited peripheral steroid levels indicating a normal ovulatory cycle. The results are interpreted as suggesting that repeated prolongation of the pill-free period from 7 to 9 days might result in a gradual increase in ovarian activity.

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