Endoscopic Botulinum Toxin Injection for Refractory Enuresis Based on Urodynamic Assessment

Traditional and innovative interventions in the management of enuresis

Introduction

Enuresis (NE) is a socially stigmatising and stressful condition affecting children's and parent's quality of life. The aim of this review was to evaluate and summarize the current knowledge about the pharmacological and non-pharmacological traditional and innovative treatments in children with NE.

Material and methods

We examined the following bibliographic electronic databases: PubMed and the Cochrane Library, from January 2000 until July 2023. The search was guided by the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) (8) and was limited to English-language papers that focused on enuresis in patients under 18 years old. Each paper that met the eligibility criteria was reviewed and analyzed in full text by three authors and any discrepancies among them were solved by debate. Due to the heterogeneity of the articles examined, we focused on a qualitative analysis.

Results

Overall, we identified 560 records through database searching. As first step, we excluded 46 articles in non-English language, 6 records whose related articles were not available, 8 articles concerning ongoing trials and 210 duplicated papers. As second step, we eliminated 215 records by evaluating only title and abstract because they did not match the inclusive criteria we mentioned before. Of the remaining 75 studies, we excluded 34 through a further discussion among authors upon the reliability of data. Thus, 41 selected articles were included in the review.

Conclusions

Multiple treatment approaches, both pharmacological and non pharmacological, have been established and validated to reduce signs and symptoms of NE and improve quality of life and the social and emotional discomfort experienced by children. The aim of pediatrician is to identify the right therapy protocol for very single child, evaluating the best approach for him and the family.

Urodynamic findings in children with primary refractory nocturnal enuresis: 10 years' experience of a tertiary center

Background/Aim

To identify correlations between urodynamic study (UDS) findings and urinary symptoms in children with refractory monosymptomatic and nonmonosymptomatic primary nocturnal enuresis.

Materials and Methods

A total of 96 neurologically normal children were enrolled, 44 consecutive boys and 51 consecutive girls, aged 5-18 years, of whom 41 (38.8%) had refractory monosymptomatic nocturnal enuresis (MNE) and 55 (61.2%) had refractory non-MNE (NMNE). We assessed the urodynamics of all children to detect any underlying bladder overactivity. A comparative analysis was carried out between the two groups of patients.

Results

Detrusor overactivity (DO), low bladder capacity, low compliance, and increased postvoid residual (PVR) were identified in 70 (72.9%), 35 (36.5%), 43, and 76 (79.2%) patients, respectively. The mean bladder compliance was 21.66 ± 14.52 mL/cmH2O (2-75 cmH2O). Of the NMNE patients, 50 (90.9%) had abnormal urodynamic findings, while 40 (97.5%) had abnormal urodynamic findings in the MNE group. There was a statistically significant relationship between NMNE and both increased PVR and abnormal voiding patterns. Both high PVR and DO were significantly associated with obstructive urinary symptoms. Constipation and history of urinary tract infection (UTI) did not significantly correlate with UDS abnormality (p = 1.0 and p = 0.49, respectively).

Conclusion

There was a high prevalence of bladder function disorders in both refractory MNE and NMNE patients in our study. This included small functional capacity, low bladder compliance, and marked DO. A nocturnal enuresis may be the only presenting symptom, however, it may be associated with bladder overactivity, UTI, and constipation; the UDS findings may aid in guiding the assessment and treatment of children suffering from primary refractory nocturnal enuresis and its association with bladder and bowel symptoms.

Novel botulinum neurotoxin-A tibial nerve perineural injection to alleviate overactive bladder symptoms in male rats

Although tibial nerve modulation has shown to induce positive changes in the overactive bladder (OAB), prolonged therapeutic effects using percutaneous stimulation have not yet been achieved. Intradetrusor onabotulinum toxin A injection can provide prolonged therapeutic effects; however, its delivery requires invasive measures. By applying local relief of tibial nerve neural entrapment with onabotulinum toxin A injection, this study investigated the feasibility and efficacy of combining the abovementioned two therapeutic strategies. An OAB animal model was developed using 12 adult Sprague-Dawley rats with cyclophosphamide intraperitoneal injection. A perineural injection site comparable to the tibial nerve perineural injection site and corresponding to that in humans was identified and developed in rats. The toxin was injected five days after establishing the OAB. The incision was made in the skin on the lateral surface of the thigh. The biceps femoris muscle was cut across, exposing the sciatic nerve and its three terminal branches: the sural, common peroneal, and tibial nerves, and 100 units of onabotulinum toxin A was injected into the surrounding tissue. Five days following injection, cystometry was performed. Inter-contraction time, contraction pressure, and interval of the disease state improved with statistical significance. The OAB animal model showed significant improvement with the tibial nerve perineural injection of botulinum toxin, thereby suggesting the possibility of a comparable treatment adaptation in humans.

Bibliometric and visual analysis of nocturnal enuresis from 1982 to 2022

Nocturnal enuresis is a common disorder among children that seriously affects physical and mental health and has become a social problem. Bibliometric analysis is a valid way to examine existing research results, current research hotspots and research frontiers. Current studies on nocturnal enuresis are numerous and complex, but a bibliometric analysis of the existing research on nocturnal enuresis has yet to be published. To better identify the research trends and frontiers in nocturnal enuresis, it is necessary to conduct a comprehensive review and analysis. We used bibliometric and visualization methods to analyze the 1,111 papers published between 1982 and 2022 from the Web of Science core collection. Basic information about the country, institution, and authors was analyzed, which led to a basic understanding of nocturnal enuresis. The United States is the most prolific country, Ghent University is the most influential institution, and Rittig Soren is the most prominent scholar. The frequency of keywords, clustering, and the cited literature were analyzed to understand the hotspots and frontiers of research, and a brief review of the highly cited literature was conducted. The current research hotspots are the treatment modalities for nocturnal enuresis, epidemiological investigations, and the exploration of pathogenesis. Clinical research, adenoidectomy, aquaporin 2, and response inhibition are potential research hotspots. The standardization of terminology in nocturnal enuresis and the pathologies of polyuria and sleep disorder are at the forefront of research. In summary, the results of our bibliometric analysis reveal views on the current situation and the trend of nocturnal enuresis research for the first time. This study may provide guidance for promoting research on nocturnal enuresis.