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Evidence summaries

Biofeedback to Augment Pelvic Floor Muscle Training for Urinary Incontinence in Women

Biofeedback may be effective in addition to pelvic floor muscle training in women with urinary incontinence. Level of evidence: "C"

Comment: The quality of evidence is downgraded by study limitations (unclear allocation concealment, unclear blinding, and incomplete outcome data in most of the trials) and by inconsistency (unexplained variability in results) .

Biofeedback in addition to pelvic floor muscle training is recommended to women with urinary incontinence and a difficulty to identify pelvic floor muscles.

The recommendation is strong because pelvic floor muscle training is an effective, cheap and harmless treatment for urinary incontinence. The recommendation attaches a low value for potential poor availability of the intervention.

Summary

A Cochrane review [Abstract] 1 included 24 studies with a total of 1583 subjects. Women who received biofeedback (BF) were significantly more likely to report that their urinary incontinence was cured or improved compared to those who received pelvic floor muscle training (PFMT) alone (RR 0.75 , 95% CI 0.66 to 0.86; 7 trials, n=520). However, women in the biofeedback arms had more contact with the health professional than those in the non-biofeedback arms. There were no statistically significant difference in leakage episodes in 24 hours (MD 0.12, 95% CI -0.22 to -0.01; 8 trials, n=532); this difference comprised around one fewer leakage episodes every eight days. For quality of life, the effect estimates in separate did not show a statistically significant difference, although the possibility of a summary statistic favouring BF or no BF could not be excluded.

A meta-analysis 3 comparing PFMT with and without electromyographic biofeedback (EMG-BF) for stress urinary incontinence (SUI) included 21 trials with the total of 3865 participants. Compared with PFMT, EMG-BF + PFMT had better rates for cure and improvement in SUI (OR 4.82, 95% CI 2.21 to 10.51, I² = 85.3%), and better quality of life and quality of sexual life.

A multicentre randomised controlled trial 2 assessed the effectiveness of PFMT plus EMG-BF or PFMT alone for newly presenting stress or mixed urinary incontinence in women (n=600). Self-reported severity of urinary incontinence (International Consultation on Incontinence Questionnaire-urinary incontinence short form = ICIQ-UI SF, range 0 to 21) did not differ between the groups (ICIQ-UI SF score 8.2 in biofeedback PFMT vs 8.5 in PFMT). Comment: Women unable to contract their muscles were excluded, as biofeedback is recommended especially for these women.

Clinical comments

Note

Date of latest search: 2021-09-20

    References

    • Herderschee R, Hay-Smith EJ, Herbison GP et al. Feedback or biofeedback to augment pelvic floor muscle training for urinary incontinence in women. Cochrane Database Syst Rev 2011;(7):CD009252. [PubMed]
    • Hagen S, Elders A, Stratton S et al. Effectiveness of pelvic floor muscle training with and without electromyographic biofeedback for urinary incontinence in women: multicentre randomised controlled trial. BMJ 2020;371():m3719. [PubMed]
    • Wu X, Zheng X, Yi X et al. Electromyographic Biofeedback for Stress Urinary Incontinence or Pelvic Floor Dysfunction in Women: A Systematic Review and Meta-Analysis. Adv Ther 2021;38(8):4163-4177. [PubMed]

Primary/Secondary Keywords