Monday, March 26, 2012

Mirena (Hormonal Contraceptive) : How does it Act ?

 Dr Deepika Tiwari, Gynecologist, Gurgaon 9911821669

Mirena acts by
  • Supplements the endometrial action of progestins to foreign body reaction
  • Endometrium becomes decidualized, with atrophy of glands
  • Inhibition of implantation
  • Inhibition of sperm capacitation and survival
The Ovarian functions are NOT disturbed; the cycles remain ovulatory in 85 percent of patients, regardless of bleeding pattern.

Few Shortcomings of Mirena include; irregular bleeding and scanty menses. Amenorrhoea may occur in up to 50 % of patients.

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