October 03, 2019
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Vaginal laser, estrogen treatments similarly improve menopausal symptoms

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Laser therapy is as effective and safe as vaginal estrogen for improving sexual and urinary functionality during menopause, according to findings from a randomized controlled trial.

Carbon dioxide fractional laser resurfacing works by activating heat shock proteins and tissue growth factors through lower temperature stimulation vs. traditional ablative lasers, Marie Fidela R. Paraiso, MD, head of the Center for Urogynecology and Reconstructive Pelvic Surgery and staff physician in the department of obstetrics and gynecology at Cleveland Clinic, and colleagues wrote in the study background.

“Although several small studies demonstrate safety and efficacy of fractionated CO2 laser therapy for vulvovaginal conditions, most published outcomes are short term and few prospective randomized controlled trials exist comparing laser to standard therapies,” Paraiso and colleagues wrote. “Therefore, the objective of this study is to compare improvement in symptoms of genitourinary syndrome of menopause between participants who underwent CO2 fractional vaginal laser therapy to those treated with vaginal estrogen alone. Specifically, we sought to compare 6-month quality of life and safety outcomes of fractionated CO2 vaginal laser therapy to vaginal estrogen for the treatment of genitourinary syndrome of menopause.”

Paraiso and colleagues analyzed data from 69 menopausal women with vaginal atrophy symptoms from six medical centers (mean age, 61 years; mean BMI, 25.4 kg/m²; 91.4% white). Researchers randomly assigned 34 participants to a laser treatment group (three intravaginal treatments at least 6 weeks apart) or a vaginal estrogen cream group (n = 35; 0.5 g conjugated estrogen cream, applied daily for 14 days, followed by 0.5 g twice weekly for 24 weeks). Primary outcome was the visual analogue scale vaginal dryness score. Secondary outcomes included evaluation of vaginal atrophy, quality-of-life symptoms, assessment of sexual function and urinary symptoms.

doctor holding a patient's hands 
Laser therapy is as effective and safe as vaginal estrogen for improving sexual and urinary functionality during menopause.
Source: Adobe Stock

Enrollment was closed before the completion of the trial because the FDA required the Foundation for Female Health Awareness to obtain and maintain an investigational device exemption, the researchers wrote.

“Because this IDE would have required a prolonged cessation of enrollment, it was decided to complete treatment of currently enrolled participants and close the study,” the researchers wrote. “Analyses were performed on all participants who completed the 6-month protocol.”

Of the 69 women enrolled, 30 women in the laser therapy group and 32 women in the vaginal estrogen group completed the 6-month protocol.

On patient global impression, 85.8% of laser participants rated their improvement as ‘‘better or much better,’’ and 78.5% reported being ‘‘satisfied or very satisfied’’ vs. 70% and 73.3%, respectively, in the vaginal estrogen group, the researchers wrote.

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In linear regression analyses, the mean difference in female sexual function index scores was no longer statistically significant, and vaginal maturation index scores remained higher in the estrogen group (P = .02), although the researchers noted that baseline and 6-month follow-up vaginal maturation index data were available for only 34 participants (16 laser, 18 estrogen).

The researchers noted the inability to reach predetermined statistical power due to early closure of the study because of a request to obtain an IDE was a “major limitation,” although findings suggest that both treatments improved vaginal symptoms.

“While we cannot state with certainty that CO2 laser treatment is noninferior to vaginal estrogen therapy due to lack of power, we can conclude from our very preliminary results that fractionated CO2 vaginal laser and vaginal estrogen treatment both resulted in improvement in genitourinary syndrome of menopause symptoms at 6 months,” the researchers wrote. “There are few randomized prospective studies looking at these outcomes, and so our findings add to the currently sparse literature on the subject matter.”

The researchers wrote that other important study limitations were the lack of sham or placebo treatments and the lack of standardized treatment.

“A better study design that would minimize bias is an adequately powered, randomized, double-blinded trial of vaginal laser with placebo cream vs. sham laser with estrogen cream and follow-up using validated subjective and objective outcomes at greater than 1 year,” the researchers wrote. – by Regina Schaffer

Disclosures: The Foundation of Female Health Awareness funded this study. Paraiso reports no relevant financial disclosures. Please see the study for all other authors’ relevant financial disclosures.