Factors affecting the outcome of endometrial ablation using Cavaterm plus

Long-term outcome of endometrial ablation therapy with Cavaterm Thermal Balloon in patients with abnormal uterine bleeding

Objective

The purpose of this study was to evaluate the long-term outcome of endometrial ablation (EA) therapy with Cavaterm Thermal Balloon in patients with abnormal uterine bleeding (AUB).

Material and Methods

The retrospective cross-sectional study was performed on 209 patients who referred to Shahid Sadoughi Hospital in Yazd, Iran between March 2010 and September 2017 with AUB undergoing EA therapy. The data was collected by a questionnaire from the medical records of patients and phone call. The primary and secondary outcomes post EA therapy (from six months to seven years post-operatively) were assessed in patients.

Results

The mean age of participants was 45.9±5.9 years and the mean follow-up duration was 21.2±13.2 months. The rate of treatment response was 95% in the first six months and 92.1% thereafter. The prevalence of amenorrhea was 41.2%. The patient satisfaction rate at the end of follow-up duration was 81.3%. Dysmenorrhea completely resolved in 32.6%. Moreover, 1.4% of patients became pregnant during follow-up. By the end of follow-up, four (1.9%) patients had a hysterectomy due directly to treatment failure.

Conclusion

This study showed that EA surgery with Cavaterm Thermal Balloon was an effective treatment for AUB. The procedure was safe and was associated with a very low rate of postoperative adverse events. The patient satisfaction rate was favorable.

Prognostic Factors for the Failure of Endometrial Ablation: A Systematic Review and Meta-analysis

OBJECTIVE

To provide an overview of prognostic factors predicting failure of second-generation endometrial ablation.

DATA SOURCES

MEDLINE, EMBASE, the Cochrane Library, and ClinicalTrials.gov were systematically searched from 1988 until February 2019. The search was conducted without language restrictions using the following search terms: "endometrial ablation," "prognosis," "predict," "long term," "late onset," "outcome."

METHODS OF STUDY SELECTION

The literature search provided a total of 990 studies. All types of studies reporting about prognostic factors of second-generation endometrial ablation failure were included.

TABULATION, INTEGRATION, AND RESULTS

After screening for eligibility, 56 studies were included in this review, of which 21 were included in the meta-analysis. In these 56 studies, 157,830 women were included. We evaluated 10 prognostic factors: age, myomas, history of tubal ligation, body mass index, parity, preexisting dysmenorrhea, caesarean delivery, bleeding pattern, uterus position, and uterus length. Meta-analysis was performed for the primary outcome (surgical reintervention) to estimate summary treatment effects. Younger age (aged 35 years or younger, odds ratio [OR] 1.68, 95% CI 1.19-2.36; aged 40 years or younger, OR 1.58, 95% CI 1.30-1.93; aged 45 years or younger OR 1.63, 95% CI 1.28-2.07), prior tubal ligation (OR 1.46, 95% CI 1.23-1.73), and preexisting dysmenorrhea (OR 2.12, 95% CI 1.41-3.19) were associated with an increased risk of surgical reintervention. Studies investigating the prognostic factors myomas and obesity showed conflicting results.

CONCLUSION

Younger age, prior tubal ligation and preexisting dysmenorrhea were found to be associated with failure of endometrial ablation. Obesity and the presence of large submucous myomas may be associated with failure, as well, though more research is necessary to estimate the influence of these factors. It is important to take the results of this review into account when counselling women with heavy menstrual bleeding.

SYSTEMATIC REVIEW REGISTRATION

PROSPERO, CRD42019126247.

Cavaterm thermal balloon endometrial ablation versus hysteroscopic endometrial resection to treat menorrhagia: The French, multicenter, randomized study

STUDY OBJECTIVE

To compare the efficacy and safety of Cavaterm thermal balloon endometrial ablation with hysteroscopic endometrial resection.

DESIGN

Multicenter randomized trial (Canadian Task Force classification I).

SETTING

Departments of obstetrics and gynecology in French university hospitals.

PATIENTS

Fifty-one women with menorrhagia unresponsive to medical treatment.

INTERVENTIONS

Women were randomized to thermal destruction of the endometrium or to hysteroscopic endometrial resection. Women completed preoperative, 6-, and 12-month postoperative pictorial charts to determine Higham blood loss scores and a satisfaction questionnaire. Operative time, discharge time, complication rate, and resumption of normal activities were evaluated for each group.

MEASUREMENTS AND MAIN RESULTS

Amenorrhea rates were 36% (95% CI 19%-56%) and 29% (95% CI 8%-51%) in the Cavaterm and the endometrial resection groups at 12 months, respectively (ns). Both treatments significantly reduced uterine bleeding. The median decrease in Higham score at 12 months was significantly higher in women treated by Cavaterm (377, range 108-1300) than in women treated by resection (255, range -82 to 555) (p=.006). A subsequent hysterectomy for recurrent bleeding was performed in 2 women, both previously treated by resection. The rate of women reporting good or excellent satisfaction was 89% (95% CI 72%-98%) in the Cavaterm group and 79% (95% CI 54%-94%) in the resection group at 12 months. Discharge time was significantly lower in women treated by Cavaterm, although postoperative pain at 1 hour was higher. There were no major complications in either group.

CONCLUSIONS

Cavaterm thermal balloon ablation was as effective as hysteroscopic endometrial resection to treat menorrhagia, both resulting in a significant reduction in menstrual blood loss and high patient satisfaction.