Эффективность и безопасность комбинированного контрацептива с хлормадинона ацетатом при обильных менструальных кровотечениях и дисменорее в реальной клинической практике

Abstract

This article presents the results of the prospective study involving 70 patients of reproductive age with heavy menstrual bleeding (HMB) and dysmenorrhea, interested in reliable contraception. Objective. To study the safety and efficacy of the low-dose combined oral contraceptive (COC) containing chlormadinone acetate (CMA) for the treatment of dysmenorrhea and HMB in real clinical practice. Patients and methods. Among 90 women who sought a method of contraception, we identified a group of 70 patients aged 18–45 years (mean age = 31.0 ± 7.7 [95% CI 29.2–32.9]) with complaints for HMB (n = 23) and/or dysmenorrhea (n = 65): primary (n = 37) and secondary (n = 28). For contraception, COC containing 0.03 mg ethinyl estradiol and 2 mg CMA was recommended. After 3 months, the dynamics of the volume of menstrual blood loss, pain severity (according to the Numeric Rating Scale (NRS)), as well as the frequency of side effects were assessed. Results. Among 90 women of reproductive age, 70 (78%) had HMB and/or dysmenorrhea of varying severity. After 3 months of using a low-dose CMA-containing COC, 87% of patients with HMB showed a statistically significant decrease in menstrual blood loss (p < 0.001); in 72% of patients, a significant decrease in pain severity was observed: mean NRS value before taking COC was 6.2 ± 2.1 [95% CI 5.7–6.7]), it decreased to 3.5 ± 1.8 [95% CI 3.0-3.9]) (p < 0.001) after 3 months. There were no significant differences in efficacy between the groups with primary and secondary dysmenorrhea. Conclusion. The prevalence of HMB and dysmenorrhea in a random sample of women of reproductive age is consistent with the data of systematic reviews (26% and 72%, respectively). The results obtained in real clinical practice confirm the additional therapeutic efficacy of the low-dose CMA-containing COC in HMB and dysmenorrhea. The frequency and severity of side effects during the COC use do not depend on the initial body mass index, but with an increase in the waist-to-hip ratio, there is a tendency to reduce the chance of developing side effects of using COC, which corresponds to the data on the metabolic neutrality of chlormadinone. Key words: chlormadinone, heavy menstrual bleeding, dysmenorrhea