Continuous progestogen regimen has blood loss benefit
No randomized trials have compared oral progestogens with placebo. A Cochrane review examined the use of cyclical progestogens (given from 10 to 20 days per cycle) for heavy menstrual bleeding.7 Cyclical progestogens appeared comparable in efficacy to NSAIDs for their effect on duration of menstruation; no statistically significant difference in menstrual blood loss was noted. Progestogens given in more continuous regimens offered greater benefit in terms of blood loss.
IUDs help avoid surgery, but can have side effects
A Cochrane review found that progestogen-releasing IUDs significantly reduce heavy menstrual bleeding and are more effective than cyclical norethisterone (21 days). Patients did, however, report greater progestogenic side effects (breast tenderness and intermenstrual bleeding) than cyclical therapy.8
One unblinded RCT that randomized women scheduled for hysterectomy for heavy bleeding to the levonorgestrel intrauterine device (LNG-IUD) or their existing medical therapy (not further described) found that women in the LNG-IUD group were more likely to cancel surgery.
Another RCT comparing hysterectomy with the LNG-IUD found that women with the LNG-IUD reported greater pain. The LNG-IUD was more cost effective at 1 and 5 years, primarily because of reduced surgical expenses. Some patients or physicians may have ethical issues with the device’s mechanism of action.
Uterine ablation when preserving fertility doesn’t matter
A review article of currently available evidence on endometrial ablation for heavy menstrual bleeding concluded that both resectoscopic endometrial ablation (via hysteroscopy) and nonresectoscopic endometrial ablative technologies (radio-frequency electrosurgical ablation, balloon thermal ablation, free fluid ablation, cryotherapy, microwaves) significantly reduce menstrual blood flow.9 These minimally invasive techniques were an option for women who weren’t concerned about preserving fertility. However, 20% to 40% of patients who were followed for more than 5 years required repeat treatment or hysterectomy.
Heavy bleeding and transcervical endometrial resection
An RCT of 187 women, average age 42 years, compared immediate transcervical resection of the endometrium to medical management for heavy menstrual bleeding.10 A 5-year follow-up was completed on 144 patients. The study showed transcervical resection of the endometrium to be superior with regard to menstrual status (less bleeding or no bleeding), patient satisfaction with outcomes, and health-related quality of life as indicated on patient questionnaires.
When other options fail…
Patients who fail medical treatment and minimally invasive uterine ablation may require hysterectomy. An RCT of 63 premenopausal women (30-50 years of age) with abnormal uterine bleeding compared hysterectomy with medical treatment.11 Hysterectomy was superior with regard to symptom resolution and health-related quality of life after 6 months.
A Cochrane review of 5 RCTs that compared endometrial resection and ablation with hysterectomy for heavy menstrual bleeding reported a significant advantage for hysterectomy in symptom resolution and patient satisfaction.12 Although the initial cost was higher for the hysterectomy group, the difference narrowed over time because of the need for retreatment in the endometrial destruction group.
Recommendations
The American College of Obstetricians and Gynecologists (ACOG) recommends initial medical management (cyclic progestins, low-dose oral contraceptives, or cyclic hormone replacement therapy) for anovulatory bleeding in women 40 years and older.13
The Practice Committee of the American Society for Reproductive Medicine lists low-dose combination hormonal pills, progestin, progestin-containing IUDs, and hormone replacement therapy as medical treatment options.14
ACOG notes that minimally invasive surgical options such as hysteroscopic endometrial ablation result in less short-term morbidity and cost less than hysterectomy.15 Results with resectoscopic and nonresectoscopic techniques are similar. Hysterectomy rates following these approaches are at least 24% at 4 years.15