Continuous Postoperative Use of Low-Dose Combined Oral Contraceptivesfor for Endometriosis-Related Chronic Pelvic Pain

• Status: Unknown status
• Trial end date: 2010-07-01

Summary

Because ovarian sex steroids fluctuations during the menstrual cycle are implicated in the pathogenesis of the endometriosis-related chronic pelvic pain (CPP), the oral contraceptives (OCs) are used with non-contraceptive indication for this disorder.

To date, OCs are widely used as medical treatment in patients with endometriosis, in addition, they are recently experimented as post-surgical therapy. Traditional cyclic regimen, with 21 days of active pills with 7 days of placebo or suspension, is usually adopted. Furthermore, recent studies suggested that long-term continuous OCs use can be effective in the postoperative period both as second- and third- line treatments after cyclic regimen failure. In these studies a combined treatment with ethinilestradiol (0.02 mg) plus desogestrel (0.15 mg) were used and compared with baseline or ciproterone acetate.

A recent study showed a deeper ovarian and endometrial suppression with continuous OCs in comparison with cyclic OCs, providing a physiological rationale for continuous OCs use for noncontraceptive indications. Furthermore, to date, no study compared post-operative continuous versus cyclic OCs in patients with endometriosis-related CPP.

• Phase: Phase 4

Details

• Lead Sponsor: University Magna Graecia
• Treatments: Estradiol; Estradiol 17 beta-cypionate; Estradiol 3-benzoate; Estradiol valerate; Polyestradiol phosphate