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Pediatric urodynamics: a clinical comparison of surface versus needle pelvic floor/external sphincter
Insights
Surface electrodes offer a practical, accurate method for diagnosing pediatric voiding abnormalities. This urodynamic evaluation technique is reliable for children with recurrent urinary infections.
Area of Science:
- Pediatric Urology
- Urodynamic Evaluation
- Diagnostic Methods
Background:
- Voiding pattern abnormalities and recurrent urinary infections are common in children.
- Accurate urodynamic evaluation is crucial for diagnosis and treatment planning.
- Existing urodynamic methods may require refinement for pediatric application.
Purpose of the Study:
- To assess the practicality, accuracy, and reliability of surface perianal electrodes for pediatric urodynamic evaluation.
- To compare different methods of monitoring electromyographic activity and intravesical pressure.
- To establish an effective diagnostic approach for children with voiding dysfunction.
Main Methods:
- Compared bipolar anal skin electrodes with needle electrodes for sphincter/pelvic floor EMG monitoring.
- Compared urethral and suprapubic catheters for intravesical pressure monitoring.
- Evaluated 37 children, with 25 undergoing comparative testing and 12 using surface electrodes and uroflowmetry.
Main Results:
- Surface perianal electrodes demonstrated similar accuracy and reliability to needle electrodes (p < 0.001).
- Both urethral and suprapubic catheters provided comparable intravesical pressure readings.
- Surface electrodes combined with uroflowmetry proved practical and accurate for diagnosing pediatric voiding abnormalities.
Conclusions:
- Surface electrodes are a practical, accurate, and reliable method for diagnosing pediatric voiding pattern abnormalities.
- Recommended technique involves surface electrodes and a urethral catheter for children without severe neurological issues or prior extensive surgery.
- Preoperative surface electromyography may screen for occult dyssynergia in patients with failed ureteral reimplantation.
Abstract:
Urodynamic evaluations were done on 37 children to diagnose voiding pattern abnormalities and/or recurrent urinary infections. Each of 25 children had 2 sets of testing to judge a practical method of urodynamic evaluation. Bipolar anal skin electrodes were compared to bipolar perianal muscle needle electrodes as a means of monitoring the urethral sphincter/pelvic floow electromyographic activity. In addition, the urethral catheter was compared to the suprapubic catheter as a means of monitoring intravesical pressure. The results were similar and statistically significant (p less than 0.001). The remaining 12 children were evaluated based only on the results of bipolar anal skin electrodes and uroflowmetry. The results of both groups clearly demonstrated that surface perianal electrodes are practical, accurate and reliable for the diagnosis and treatment of children with voiding pattern abnormalities. We recommend the use of surface electrodes and a urethral catheter as techniques for the urodynamic evaluation of voiding pattern abnormalities of children without overt neuropathology or extensive urethral operation. Preoperative surface electromyography of the urinary sphincters may prove to be a useful screening test to detect occult dyssynergia in patients who have had failed ureteral reimplants.