Journal of pediatric urology · 2019
Impact of transcutaneous interferential electrical stimulation for management of primary bladder neck dysfunction in children.
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Sharifi-Rad Lida, Ladi Seyedian Seyedeh-Sanam, Fatemi-Behbahani Seyed-Mahmood, Lotfi Behzad, Kajbafzadeh Abdol-Mohammad
Аннотация
INTRODUCTION: Several studies have revealed that electrical stimulation is an effective modality for treatment of lower urinary tract (LUT) dysfunction via raising the capacity or compliance of the bladder or maybe by pelvic floor relaxation and reducing detrusor pressure as well.
OBJECTIVE: This study aimed to assess the efficacy of transcutaneous interferential (IF) electrical stimulation on LUT symptoms as well as urine flow parameters in children with primary bladder neck dysfunction (PBND).
STUDY DESIGN: We reviewed the charts of all children with persistent LUT symptoms who underwent IF electrical stimulation between 2010 and 2017. Twenty-three neurologically and anatomically normal children (mean age: 7.7 years, range: 5-13) with LUT symptoms were included in this study. Children had different LUT symptoms such as hesitancy, straining, urinary incontinence and constipation with no sufficient response to medical treatment (α -blocker) for at least 6 months. IF electrical stimulation was performed for 15 sessions, two times per week. All children were symptomatic and had abnormal urine flow pattern with an electromyographic (EMG) lag time of more than 6 s on uroflowmetry with EMG. A voiding chart, uroflowmetry with EMG and kidney and bladder ultrasounds were performed before and after the treatment for all children. Maximum and average urine flow rates, EMG lag time and postvoid residual volume were analyzed. In addition, alpha blocker therapy was continued during IF therapy.
RESULTS: Mean maximum and average urine flow rates improved from 14.1 to 7.6-19.7 ml/s and 9.5 ml/s, respectively, while mean EMG lag time decreased from 11.7 to 5.2 s after the treatment (all P < 0.05). Also postvoid residual volume decreased significantly from 35.6 to 7.6 ml at the end of treatment courses.
DISCUSSION: Pelvic floor EMG lag time, a documented parameter on uroflowmetry with EMG, defined as the time from the start of pelvic floor relaxation during a volitional voiding effort (the first stage of normal voiding) to the start of urine flow. Results showed that IF therapy decreased pelvic floor EMG lag time in children with PBND. In addition, increase in mean maximum and average urine flow rates in our patients indicated that pelvic IF therapy and behavioral modification improved voiding dysfunction in most of the patients and probably decreased bladder neck activity during voiding. Future studies with larger sample size are needed to support this finding.
CONCLUSION: IF therapy appears safe, effective and reproducible in improvement of PBND in children.
OBJECTIVE: This study aimed to assess the efficacy of transcutaneous interferential (IF) electrical stimulation on LUT symptoms as well as urine flow parameters in children with primary bladder neck dysfunction (PBND).
STUDY DESIGN: We reviewed the charts of all children with persistent LUT symptoms who underwent IF electrical stimulation between 2010 and 2017. Twenty-three neurologically and anatomically normal children (mean age: 7.7 years, range: 5-13) with LUT symptoms were included in this study. Children had different LUT symptoms such as hesitancy, straining, urinary incontinence and constipation with no sufficient response to medical treatment (α -blocker) for at least 6 months. IF electrical stimulation was performed for 15 sessions, two times per week. All children were symptomatic and had abnormal urine flow pattern with an electromyographic (EMG) lag time of more than 6 s on uroflowmetry with EMG. A voiding chart, uroflowmetry with EMG and kidney and bladder ultrasounds were performed before and after the treatment for all children. Maximum and average urine flow rates, EMG lag time and postvoid residual volume were analyzed. In addition, alpha blocker therapy was continued during IF therapy.
RESULTS: Mean maximum and average urine flow rates improved from 14.1 to 7.6-19.7 ml/s and 9.5 ml/s, respectively, while mean EMG lag time decreased from 11.7 to 5.2 s after the treatment (all P < 0.05). Also postvoid residual volume decreased significantly from 35.6 to 7.6 ml at the end of treatment courses.
DISCUSSION: Pelvic floor EMG lag time, a documented parameter on uroflowmetry with EMG, defined as the time from the start of pelvic floor relaxation during a volitional voiding effort (the first stage of normal voiding) to the start of urine flow. Results showed that IF therapy decreased pelvic floor EMG lag time in children with PBND. In addition, increase in mean maximum and average urine flow rates in our patients indicated that pelvic IF therapy and behavioral modification improved voiding dysfunction in most of the patients and probably decreased bladder neck activity during voiding. Future studies with larger sample size are needed to support this finding.
CONCLUSION: IF therapy appears safe, effective and reproducible in improvement of PBND in children.