Purpose:Parasacral transcutaneous electrical nerve stimulation has been used to manage lower urinary tract symptoms refractory to standard urotherapy. Nevertheless, its actual effectiveness in treatment of bladder and bowel dysfunction remains to be established. We sought to evaluate the effectiveness of parasacral transcutaneous electrical nerve stimulation in the treatment of children with bladder and bowel dysfunction.Materials and Methods:This was a randomized clinical trial conducted with children and adolescents of 5–17 years of age diagnosed with bladder and bowel dysfunction. Patients with neurological or anatomical abnormalities of urinary or digestive tracts, those unable to attend treatment sessions 3 times a week, individuals with diabetes mellitus or diabetes insipidus and those using anticholinergic drugs or laxatives were excluded from the study. The sample was divided into 2 groups: a control group submitted to standard urotherapy plus sham electrotherapy applied to the scapular region and a treatment group submitted to urotherapy plus parasacral transcutaneous electrical nerve stimulation. All the patients were submitted to 3, 20-minute electrotherapy (parasacral transcutaneous electrical nerve stimulation or sham) sessions/week for a total of 20 sessions.Results:Forty patients were evaluated, 20 in the control group and 20 in the treatment group. Mean age (±standard deviation) was 8.4±2.8 years and 52.5% were male. In 15 patients (37.5%), rectal diameter was ≥3 cm. Lower urinary tract symptoms improved in both groups following treatment, with no statistically significant differences in Dysfunctional Voiding Scoring System score, lower urinary tract symptoms or uroflowmetry patterns between the groups. Intragroup evaluation showed a significant improvement in enuresis in the treatment group. There was a significant improvement in functional constipation post-intervention in treatment group compared to control group (70% vs 20%, p=0.004).Conclusions:Parasacral transcutaneous electrical nerve stimulation is effective for treatment of bladder and bowel dysfunction in children and adolescents, particularly insofar as functional constipation is concerned.

Aim The functional constipation (FC) is a source of an expressive suffering in children, negatively affecting their emotional, social, and physical well‐being. The objective of this study is to describe the clinical and behavioural characteristics of children/adolescents with FC. Methods A cross‐sectional, observational, analytical study was conducted in public places by interviewing parents of children/adolescents about their child's bowel habits and psychological profile. Bowel symptoms were investigated using the Rome IV criteria. The Strengths and Difficulties Questionnaire (SDQ) was used to evaluate the emotional and behavioural problems. Results Of 799 children/adolescents included, 424 (53.1%) were female. Mean age was 9.1 ± 2.7 years. FC prevalence was 20.4%. The most common symptoms in Rome IV criteria were ‘painful or hard bowel movements’ (n = 110; 67.5%; 95% confidence interval: 60.0–74.3) and ‘retentive posturing or excessive volitional stool retention’ (n = 89; 54.6%; 95% confidence interval: 46.9–62.1). Median scores for internalising symptoms (7; interquartile range (IQR): 4–9 vs. 5; IQR: 2–7; P < 0.001) and externalising symptoms (7; IQR 4–11 vs. 6; IQR 3–9; P < 0.001) were higher in constipated children compared to non‐constipated participants, respectively. The SDQ domains that were associated with FC were emotional symptoms (median 4, P < 0.001) and conduct problems (median 3, P < 0.001). No association was found between faecal incontinence and median scores for the internalising/externalising symptoms. All Rome IV criteria were associated with abnormal overall SDQ scores. Conclusion Children and adolescents with FC had more emotional and behavioural problems irrespective of whether faecal incontinence was present or not, with higher scores for internalising and externalising symptoms compared to non‐constipated children.

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Aim Although a correlation has been reported between enlarged rectal diameter and functional constipation (FC), the relevance of measuring the transverse diameter of the rectum for diagnosing FC remains unclear, even in patients with lower urinary tract symptoms (LUTS). This study aimed to measure rectal diameter in children/adolescents diagnosed with LUTS, with and without FC. Methods This cross‐sectional study included 4–17 years old children/adolescents attending a multidisciplinary outpatient clinic for urinary disorders between June 2016 and November 2018. All participants had LUTS, with or without FC. Those incorrectly completing the study questionnaires or with neurological and/or anatomical abnormalities of the genitourinary and/or gastrointestinal tract were excluded. Urinary symptoms were evaluated using the dysfunctional voiding symptom score and FC was assessed using the Rome IV criteria. Transabdominal ultrasonography was used to evaluate the bladder and measure rectal diameter. A transverse diameter ≥3 cm defined an enlarged rectum. Bladder capacity (i.e. the bladder volume immediately before voiding), post‐void residual urine, bladder wall thickness and first volume voided after ultrasonography were measured. Results Mean age was 8.9 ± 3.2 years and 55.1% were female. Of 107 patients included, constipation was diagnosed in 72 (67.3%), and lower urinary tract dysfunction in 90 (84.1%). In 72 participants (67.3%), lower urinary tract dysfunction was associated with FC, constituting bladder and bowel dysfunction. Rectal diameter was increased in 51 patients (47.7%). There was no association between rectal diameter ≥ 3 cm and urinary urgency, enuresis, increased daytime urinary frequency, nocturia, daytime incontinence, constipation, severe LUTS or bladder and bowel dysfunction (P > 0.05 in all cases). However, increased rectal diameter was associated with at least one episode of faecal incontinence per week in constipated patients (P = 0.02). There was no correlation between rectal diameter and dysfunctional voiding symptom score (rs = 0.00), bladder capacity (rs = 0.01), post‐void residual urine (rs = 0.05), bladder wall thickness (rs = 0.00) or first volume voided after ultrasonography (rs = 0.06); P > 0.05 in all cases. Conclusion There was no association between the current cut‐off point characterising the rectum as distended and the severity of urinary symptoms, even when FC was present. However, the complaint of faecal incontinence associated with increased rectal diameter may suggest functional constipation. The cross‐sectional design, however, constitutes a limitation. Further studies may be able to determine the ideal diagnostic cut‐off point for bowel and urinary dysfunction. Rectal diameter was not associated with the intensity of LUTS, with or without FC. However, the complaint of faecal incontinence associated with increased rectal diameter may suggest functional constipation.