Four-hour voiding observations detect neurogenic lower urinary tract dysfunction in neonates with anorectal malformation.

INTRODUCTION: Neurogenic lower urinary tract dysfunction (LUTD) has been reported in 20-50% of children with anorectal malformations (ARM). As neurogenic LUTD represents an inherent risk of renal deterioration and urinary tract infections, an early diagnosis is important. The gold standard for evaluating neurogenic LUTD involves invasive urodynamic testing but a useful addition should be an easy-to-perform, non-invasive method of screening. OBJECTIVE: In this study, we evaluate non-invasive 4 h voiding observations as a screening method for neurogenic LUTD in ARM children. STUDY DESIGN: Thirty-four patients with ARM, excluding those with perineal fistulas, were evaluated using both 4 h voiding observation and urodynamic testing before and after posterior sagittal anorectoplasty (PSARP) at median ages of 0.3 and 1.1 years. In the urodynamic assessment, the gold standard for neurogenic LUTD, nine children received the diagnosis, eight innate and one post-surgery. RESULTS: Five boys with a high urethral fistula and anomalies of the spinal cord had urodynamically diagnosed neurogenic LUTD, a dysfunction also identified in the 4 h voiding observations. The pattern was characterised both by an increase in the number of voiding and the number of interrupted voiding, urinary leakage and elevated residual urine (Figure). In three girls with a vestibular fistula and tethered cord, an urodynamic investigation identified suspected mild neurogenic LUTD. In the voiding observations, an abnormal voiding pattern was not as obvious in the girls as in the five males. One girl with cloaca showed signs of postsurgical denervation damage, which was easily identified in the 4 h voiding observations (high capacity and elevated residual urine). DISCUSSION: In the present study, gender differences in the severity of dysfunction reflected in the free voiding pattern in infants with ARM and neurogenic LUTD is probably the result of the different underlying causes of neurogenic LUTD in boys and girls. Boys with the condition have a congenital malformation of the caudal part of the spinal cord and girls a tethering of the cord. The most obvious limitation of the study was the low number of patients. Despite this, we consider the results worth reporting, since we found that results in the free voiding observations effectively confirmed what was established in the urodynamic investigations. CONCLUSION: In pre-PSARP patients, 4 h voiding observations can be used to screen for severe neurogenic LUTD requiring attention and treatment. When post-surgical denervation is suspected, the voiding observation is also a good method for indicating the diagnosis.

Development and Validation of Symptom Score for Total Bladder-Bowel Dysfunction: Subscales for Overactive Bladder and Dysfunctional Voiding.

PURPOSE: Bladder-bowel questionnaires are an important tool in diagnosing nonneurogenic bladder-bowel dysfunction in children. We report the validity and reliability of a bladder-bowel questionnaire that has been in clinical use at our institution for decades. MATERIALS AND METHODS: The bladder-bowel questionnaire contains 13 questions, with answers ranging from never (score of 0) to daily (3). The questionnaire was answered by 139 healthy controls and 134 children 3 to 16 years old diagnosed with bladder-bowel dysfunction by a pediatric urologist/urotherapist. A subdiagnosis of overactive bladder or dysfunctional voiding was made in each patient. Bladder-bowel questionnaire scales were developed and evaluated against hypotheses of validity (known groups/convergent/discriminating) and reliability (internal consistency/retest reliability), sensitivity and specificity. Responsiveness was tested in 80 patients who answered the bladder-bowel questionnaire after treatment. RESULTS: A total bladder-bowel dysfunction score scale demonstrated the ability to discriminate between patients with bladder-bowel dysfunction and healthy subjects. It resulted in a ROC curve with AUC of 0.96. The maximized sensitivity was 94% and specificity was 89% for a cutoff score of 7. Two subscales were identified referring to 6 filling phase items and 3 voiding phase items. When tested in patients with overactive bladder and dysfunctional voiding, respectively, multivariable scales performed sufficiently to discriminate between those with and without overactive bladder, and those with and without dysfunctional voiding. All of these scales fulfilled the evaluated requirements for validity and reliability. At 1 year after treatment all scale scores corresponded to patient improvement (p <0.0001), suggesting the bladder-bowel questionnaire can detect clinical change over time. CONCLUSIONS: The bladder-bowel questionnaire is valid and reliable for diagnosing bladder-bowel dysfunction in pediatric patients, and overactive bladder and dysfunctional voiding in those with bladder-bowel dysfunction.

Effects of transcutaneous neuromodulation (TENS) on overactive bladder symptoms in children: a randomized controlled trial.

BACKGROUND: The aim of the present study was to investigate whether addition of transcutaneous electrical nerve stimulation (TENS) treatment improves the results of standard urotherapy in children with overactive bladder (OAB) symptoms. MATERIAL AND METHODS: Sixty-two children with symptoms of OAB and incontinence were included. The children were randomized either to standard urotherapy treatment alone or a combination of standard urotherapy and TENS. The effect variables were taken from a voiding-drinking diary: number of voiding, number of incontinence episodes, and maximum voided volume. RESULTS: Both treatment groups had good treatment results, with no significant difference between the groups. In the standard treatment group 13/28 (46%) were completely dry and 11/28 (40%) had a decrease in incontinence episodes, compared to 16/24 (67%) and 3/24 (13%), respectively, in the standard+TENS group (p=0.303). The number of voiding decreased in two-thirds of the patients in both groups. However, maximal voided volume only increased in the standard treatment group. Subjectively 72% and 80% considered themselves significantly improved or free of symptoms. Previous treatment was registered in 15/55 (27%). All efficacy variables decreased in those with previous treatment, but with no difference between the standard and standard+TENS treatment groups. The only difference noted was when comparing the children without previous treatment in the groups: a significantly higher proportion were completely dry in the TENS group (12/18 [71%] versus 10/22 [48%], p=0.05). CONCLUSION: Our results showed no significant difference overall in treatment response to OAB symptoms between urotherapy only and urotherapy+TENS, whereas a tendency to difference was found in children without previous treatment. Thus with good urotherapy support, TENS only seems to have marginal additional effects on OAB symptoms.