Objective: Our purposes were to compare the impact of surgery on menstrual blood flow reduction and on the increase in hemoglobin values as primary endpoints at 12 months, and operating time, complication rates, postoperative pain scores at 12 h and surgically induced amenorrhea rates at 12 months as secondary endpoints after roller ball endometrial ablation or thermal balloon ablation for myoma-induced menorrhagia. Materials and Methods: Menorrhagic women (documented by a validated pad scoring system) over 40 years of age, with a mobile myomatous uterus smaller than 12-week pregnancy, were enrolled in a prospective randomized trial to compare endometrial roller ball ablation and thermal balloon ablation after pharmacological endometrial thinning. One year after surgery, primary and secondary endpoints in both groups were compared. Results: Forty-five subjects underwent endometrial thermal balloon ablation under local anesthesia and 48 underwent endometrial roller ball ablation under general anesthesia. Statistically significant but similar decreases in mean pictorial blood assessment score and increases in mean hemoglobin values were noted for both groups at 12 months. Those who underwent endometrial roller ball ablation had experienced significantly more intraoperative complications. Conclusion: Thermal balloon ablation under local anesthesia for myoma-induced menor- rhagia provided both significant and statistically similar reductions in menstrual blood flow and increases in hemoglobin values with no intraoperative complication compared to roller ball endometrial ablation.

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