Endometrial Ablation with a Thermal Balloon: The First 10 Years

Thermal balloon endometrial ablation in the treatment of heavy menstrual bleeding

Aim:

Heavy menstrual bleeding is one of the common health problems in women. The first-line therapy of heavy menstrual bleeding is the medical therapy, but this is not successful. Currently, global ablation procedures were introduced for treating of heavy menstrual bleeding. The aim of this study was to the analysis of the patient with menorrhagia performed operations of Cavaterm in our university affiliated hospital, and explores its effectiveness and acceptability.

Methods:

A retrospective study was conducted on 30 patients with menorrhagia who were unresponsive to hormone therapy or not candidates for hysterectomy underwent endometrial ablation using Cavaterm. Preoperative and postoperative PBAC Scoring System was used to assess menorrhagia. Outcome measures were amenorrhea rates, reduction of menstrual flow rates, heavy bleeding, menstrual and patients’ satisfaction rates at 3, 6 and 12 months postoperative.

Results:

After a follow-up at 3, 6, and 12 months postoperative, 36.7%, 43.3%, and 36.7% of women had a reduction in vaginal bleeding, respectively. Amenorrhea rates were 56.7%, 50.0%, and 56.7% in the Cavaterm at 3, 6, and 12 months. The rate of women’s reported good or excellent satisfaction was 93.3% in 12 months. During the follow-up period, no woman received a subsequent hysterectomy.

Conclusion:

The findings of this research indicated that outcome with the Cavaterm was as good for women with menorrhagia. Therefore, it is necessary to emphasize on lower operative and post-operative procedural risk and a deleterious effect on patients who were unresponsive to hormone therapy.

Developing minimally invasive surgery centers within kaiser permanente: the integrated multidisciplinary experience of los angeles

Minimally invasive surgical therapies are growing in type and volume of interventions. As one of the largest health delivery organizations in the US, Kaiser Permanente staff must be aware that the proliferation of these technologies has occurred in parallel within many surgical specialties, with a large variation in level of implementation between different regions and even within regions. In Los Angeles, we have developed the Minimally Invasive Surgery Center, encompassing a multidisciplinary, integrated approach. It unites the effort and expertise of many outstanding practitioners within the organization and consolidates the achievements of many surgical specialties. It also brings together the elements needed to provide the highest level of care to our patients in a safe, efficient, cost-effective environment, with minimal morbidity and best long-term outcome.

Second-generation endometrial ablation technologies: the hot liquid balloons

Hysteroscopic endometrial ablation (HEA) was introduced in the 1980s to treat menorrhagia. Its use required additional training, surgical expertise and specialized equipment to minimize emergent complications such as uterine perforations, thermal injuries and excessive fluid absorption. To overcome these difficulties and concerns, thermal balloon endometrial ablation (TBEA) was introduced in the 1990s. Four hot liquid balloons have been introduced into clinical practice. All systems consist of a catheter (4-10mm diameter), a silicone balloon and a control unit. Liquids used to inflate the balloons include internally heated dextrose in water (ThermaChoice, 87 degrees C), and externally heated glycine (Cavaterm, 78 degrees C), saline (Menotreat, 85 degrees ) and glycerine (Thermablate, 173 degrees C). All balloons require pressurization from 160 to 240 mmHg for treatment cycles of 2 to 10 minutes. Prior to TBEA, preoperative endometrial thinning, including suction curettage, is optional. Several RCTs and cohort studies indicate that the advantages of TBEA include portability, ease of use and short learning curve. In addition, small diameter catheters requiring minimal cervical dilatation (5-7 mm) and short duration of treatment cycles (2-8 min) allow treatment under minimal analgesia/anesthesia requirements in a clinic setting. Following TBEA serious adverse events, including thermal injuries to viscera have been experienced. To minimize such injuries some surgeons advocate the use of routine post-dilatation hysteroscopy and/or ultrasonography to confirm correct intrauterine placement of the balloon prior to initiating the treatment cycle. After 10 years of clinical practice, TBEA is thought to be the preferred first-line surgical treatment of menorrhagia in appropriately selected candidates. Economic modeling also suggested that TBEA may be more cost-effective than HEA.

Two cases of leiomyoma necrosis after thermal balloon endometrial ablation

The presence of intramural leiomyomas is not necessarily a contraindication to thermal balloon endometrial ablation, provided there is minimal distortion of the endometrial cavity. We report 2 cases of necrosis of intramural leiomyomas after the procedure. These cases illustrate a potential complication of thermal balloon endometrial ablation that has been reported only once previously in the medical literature.

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.

The medium- and long-term outcome of endometrial ablative techniques

OBJECTIVE

To determine the medium-term (1-3 years) and long-term (3-5 years) outcome for women who underwent endometrial ablative techniques. To determine the uptake of these operations and the outcome results.

STUDY DESIGN

The hospital records of all women who underwent either Uterine Balloon Therapy (UBT) or VESTA (Multiple Electrode Device) since our commencement of use of these procedures in the Rotunda Hospital, Dublin were reviewed. Medium-term assessment was by retrospective analysis of the patient records for the incidence of complications and the necessity of further medical and surgical treatment. Long-term outcome was assessed by completion of a questionnaire by all patients. Demography, complications, patient satisfaction, new symptomatology and the need for further treatment were assessed. Forty-four women who underwent UBT and 40 women who had VESTA ablation formed our study group.

RESULTS

Our main outcome measures were assessment of the amenorrhoea rate and patient satisfaction in the long-term. Medium-term follow-up revealed a 90% success rate. Long-term follow-up showed on overall treatment success of 80% and a patient satisfaction rate of 73%.

CONCLUSION

Both UBT and VESTA were associated with high rates of amenorrhoea and patient satisfaction in the long-term.

Hysteroscopic and nonhysteroscopic endometrial ablation

Endometrial ablation is defined as the elimination of the endometrium by thermal energy or resection. It was introduced in the 1980s as an alternative to hysterectomy to those patients with abnormal uterine bleeding and benign pathology who are unable or unwilling to tolerate traditional therapies. This article explores various endometrial ablation techniques.