Brazilian consensus in enuresis-recomendations for clinical practice

ABSTRACT Introduction Enuresis, defined as an intermittent urinary incontinence that occurs during sleep, is a frequent condition, occurring in about 10% of children at 7 years of age. However, it is frequently neglected by the family and by the primary care provider, leaving many of those children without treatment. Despite of many studies in Enuresis and recent advances in scientific and technological knowledge there is still considerable heterogeneity in evaluation methods and therapeutic approaches. Materials and Methods The board of Pediatric Urology of the Brazilian Society of Urology joined a group of experts and reviewed all important issues on Enuresis and elaborated a draft of the document. On September 2018 the panel met to review, discuss and write a consensus document. Results and Discussion Enuresis is a multifactorial disease that can lead to a diversity of problems for the child and family. Children presenting with Enuresis require careful evaluation and treatment to avoid future psychological and behavioral problems. The panel addressed recommendations on up to date choice of diagnosis evaluation and therapies.

Brazilian consensus in enuresis-recomendations for clinical practice.

INTRODUCTION: Enuresis, defined as an intermittent urinary incontinence that occurs during sleep, is a frequent condition, occurring in about 10% of children at 7 years of age. However, it is frequently neglected by the family and by the primary care provider, leaving many of those children without treatment. Despite of many studies in Enuresis and recent advances in scientific and technological knowledge there is still considerable heterogeneity in evaluation methods and therapeutic approaches. MATERIALS AND METHODS: The board of Pediatric Urology of the Brazilian Society of Urology joined a group of experts and reviewed all important issues on Enuresis and elaborated a draft of the document. On September 2018 the panel met to review, discuss and write a consensus document. RESULTS AND DISCUSSION: Enuresis is a multifactorial disease that can lead to a diversity of problems for the child and family. Children presenting with Enuresis require careful evaluation and treatment to avoid future psychological and behavioral problems. The panel addressed recommendations on up to date choice of diagnosis evaluation and therapies.

Enuresis: evaluation and treatment.

Enuresis is a common pediatric problem that creates a lot of stress for both the child and his/her family. Unfortunately, many of these patients do not seek medical attention for evaluation and treatment. It is important in the care of the child with enuresis to understand the definitions of the disorder, routinely ask about bowel and bladder habits, clarify the nature of the wetting (daytime, nighttime, or both) in the child, and perform a thorough history and physical examination. Laboratory studies are often minimal. Treatment (behavioral or medicinal) is dependent on the type of enuresis present, and patient compliance. Successful management of enuresis has benefits to both the child and family.

Infrequent enuresis, the uninvestigated majority comparisons between children with enuresis of varying severity.

OBJECTIVE: The main objective was to compare children with frequent enuresis (FE) and children with infrequent enuresis (IE) using anamnestic data and variables related to bladder and kidney function. A secondary aim was to look at the group of children who wet their beds every single night, a phenomenon we chose to call constant enuresis (CE). SUBJECTS AND METHODS: The parents recorded the number of wet and dry nights for a period of 14 days, and measured the voided volumes as well as nocturnal urine production for 48 h. History data relevant to bladder and bowel function was also recorded. RESULTS: The children could be grouped as follows: IE, n = 14; FE, n = 18; and CE, n = 22. The children with IE were slightly older than the other groups, IE mean 7.57; FE mean 6.22; CE, mean 6.56 (p = 0.004). When comparing the groups in terms of the measured parameters, only one significant difference was found: the FE group had larger average daytime voided volumes, but only when the first morning void was included. The only significantly differing anamnestic variable was previous daytime incontinence, which was more common among the children in the IE group. CONCLUSIONS: When comparing children with varying enuresis severity, no major differences regarding bladder function and urine production were found. Furthermore, children with infrequent enuresis tend to be slightly older when they seek medical help.

[Classification of enuresis/encopresis according to DSM-5]. / Klassifikation der Enuresis/ Enkopresis im DSM-5.

Elimination disorders are common in childhood and adolescence. Enuresis is traditionally defined as wetting from the age of 5 years and encopresis as soiling from 4 years onwards - after all organic causes have been excluded. In the past decades, many subtypes of elimination disorders have been identified with different symptoms, etiologies, and specific treatment options. Unfortunately, the DSM-5 criteria did not integrate these new approaches. In contrast, classification systems of the International Children's Incontinence Society (ICCS) for enuresis and urinary incontinence as well as the ROME-III criteria for fecal incontinence offer new and relevant suggestions for both clinical and research purposes.

Outcome of a standardized approach to childhood urinary symptoms-long-term follow-up of 720 patients.

AIMS: To investigate the relevance of enuresis subtyping for selection of treatment modality and for long-term outcome in a large consecutive patient cohort. MATERIALS AND METHODS: We included all patients referred for urinary incontinence during a 5-year period but excluding recurrent urinary tract infections (UTI). Type and severity of incontinence, prior history, results of examinations performed, number of visits, and effect of all treatments provided, were included in a clinical database. RESULTS: Seven hundred twenty children aged 4-16 years (mean 8.5 ± 2.2 years, 239 girls) were included in the analysis (42% with monosymptomatic (MNE), 55% with non-MNE, and 3% with isolated daytime incontinence). Initial evaluation revealed only few underlying causes (one neurological and eight anatomical). Investigations showed significant differences between MNE and non-MNE patients as both maximal voided volume and nocturnal urine volume was lower in non-MNE patients (P < 0.001). Follow-up for average 1,587 days (3.4 years) was performed in 660 (92%) patients. A higher number of visits and a longer treatment period were needed for non-MNE patients (on average 4.7 ± 2.8 visits) than MNE patients (3.1 ± 1.6 visits, P < 0.001). The most common treatment regimen that resulted in dryness in both MNE (40%) and non-MNE (36%) was the alarm system. Interestingly, of the 539 patients who initially were referred due to desmopressin resistance 177 (33%) of these were dry on desmopressin monotherapy. CONCLUSIONS: The study indicated that MNE and non-MNE are two distinct disease entities with different optimal treatments and showed that the latter patients are more difficult and time-consuming to manage.

[Therapeutic approach of enuresis based on the differentiation of the enuretic syndrome and monosymptomatic enuresis]. / Enfoque terapéutico de la enuresis basándose en la diferenciación del síndrome enurético y la enuresis monosintomática.

INTRODUCTION: Enuresis affects 15% of the children under 5. Possible etiopatogeny explaining the mechanism of production of nocturnal enuresis has been described, resulting in different terapeutical approaches; however, we cannot speak up to now of general guidelines for its treatment. MATERIALS AND METHODS: On the basis of 544 children who were treated in our hospital in the last 12 years, we analysed a sample of 124 patients corresponding to the last two years. We now present the therapeutical protocol used and analyse the results. In the initial therapeutical approach a distinction is made between monosymptomatic enuresis and eneuretic syndrome. RESULTS: We studied a total of 120 patients (89 boys and 31 girls). 63% of them showed monosymptomatic enuresis while 37% suffered from enuretic syndrome. In the case of 15% of them, this was associated with heavy sleep and difficulties to wake up. 92% was the general percentage of recovery. In the patients suffering from nonosymptomatic eneuresis, the problem was solved with desmopressin in 87% of them (demospressin on its own in 65% or in combination with oxibutine in the remaining 35%). In the group of enereutic symdrome, the problem was solved with oxibutine in 71% (on its own in 40% or in combination with desmopressin in 54%. CONCLUSIONS: The treatment and solution of enuresis improve the child's self-esteem and the anxiety caused in the family. A good medical history with a clear distinction between enuretic syndrome and monosyntomatic enuresis leads us to a suitable therapeutical approach for every patient, allowing us to find earlier the right treatment for every individual.

Clinical inconsistency of lower urinary tract symptoms between questionnaire and bladder diary in children with nocturnal enuresis.

PURPOSE: Classification of pediatric enuresis into monosymptomatic nocturnal enuresis and nonmonosymptomatic nocturnal enuresis is crucial for management because these cases differ in many clinical respects. However, correct classification is frequently confused based on questionnaire and/or bladder diary. We tested the consistency of information obtained on lower urinary tract symptoms between our questionnaire and bladder diary. MATERIALS AND METHODS: A total of 108 physically and neurologically normal patients (mean age 7.2 years) with enuresis were included in the study. All patients filled out the questionnaire and 3-day bladder diary completely. Our questionnaire included items on urinary frequency, daytime incontinence and voiding postponement. A total of 93 patients underwent uroflowmetry and residual urine measurements. We analyzed information on lower urinary tract symptoms from the questionnaire and the bladder diary, as well as the uroflowmetry results. RESULTS: The percentage of children with nonmonosymptomatic nocturnal enuresis was 89.8% and 68.5% based on the questionnaire and bladder diary, respectively. In comparisons between the questionnaire and bladder diary we did not observe any significant consistency regarding urinary frequency (p = 0.912), daytime incontinence (p = 0.356) or voiding postponement (p = 0.505). Maximum voided volume, average voided volume and percent maximum voided volume/expected bladder capacity of children with monosymptomatic nocturnal enuresis were significantly higher than in those with nonmonosymptomatic nocturnal enuresis based on the bladder diary (p = 0.006, 0.001 and 0.041, respectively). By contrast, no significant difference was found between children with monosymptomatic and nonmonosymptomatic nocturnal enuresis based on the questionnaire (p = 0.559, 0.597 and 0.947, respectively). CONCLUSIONS: Significant discrepancies in lower urinary tract symptoms were observed between the questionnaire and bladder diary. Therefore, a detailed history and discussion with the patient and family should be performed to correlate with the questionnaire and bladder diary for the proper treatment of children with enuresis. An updated questionnaire containing a detailed scoring system may be needed.

[The system of management nocturnal enuresis based on functional classification]. / System leczenia moczenia nocnego oparty na podziale czynnosciowym.

UNLABELLED: The aim of the study was to describe our diagnostic and therapeutic logarithm based on functional classification in children with enuresis, and effects of therapy based on this classification. MATERIALS AND METHODS: we reviewed charts of 123 children managed because of nocturnal enuresis (68 boys, 55 girls, aged 4-18 (mean 7,6) years). Every child had routinely performed ultrasonography, urinalysis, uroflowmetry with estimation of residual urine. Children with urinary tract infections or malformations of the urinary tract were not included in this study. At the first visit all children were instructed to conduct voiding diary. On the base of data from voiding diarys and uroflowmetries children are divided in two groups: Group I (n=21) with monosymptomatic nocturnal enuresis. Group II (n=102) children with bladder dysfunction and enuresis. In the first group rehabilitation program with bladder training, conducting voiding diary and conditioning therapy with alarm device was introduced. In children with bladder dysfunctions therapy started with bladder training and pharmacotherapy of bladder dysfunction. RESULTS: 9 children (6 from Group I and 3 from Group II) started to wake after starting bladder training. 81 children from Group II improved bladder function. 30 children from Group II started to wake up during therapy of bladder dysfunction. In 44 children, who improved bladder function and still had episodes of nocturnal enuresis, therapy with alarm device was introduced. From all 66 children treated with alarm device 5 started to wake up without any one episode of wetting. In 20 children the ability to wake up before alarm started to ring occurred in the first month of therapy. 40 children need to be treated for the second month, in 5 children therapy was prolonged for the third month. 9 children did not learn to wake up for urination. We have 8 drop-outs. In 7 therapy was repeated because of recurrence. CONCLUSION: The system of treatment of nocturnal enuresis is effective both in children with monosymptomatic nocturnal enuresis and in children with enuresis and voiding dysfunction.

[Enuresis: pathogenesis, diagnostics, and interventions]. / Enuresis: Erklärungsansätze, Diagnostik und Interventionsverfahren.

This review summarizes the current scientific knowledge on enuresis. Enuresis is one of the most common disorders in childhood. New conclusions on classification, aetiology, clinical diagnostics and therapy could be drawn in the past years. Thus, recent results have shown that the previous classification of enuresis into nocturnal, diurnal and diurnal and nocturnal forms which is suggested by DSM-IV and ICD-10 is not sufficient. Daytime wetting consists of a heterogeneous group of syndromes, which should be considered as functional urinary incontinence. Primary nocturnal enuresis is mainly caused by biological factors. In contrast, psychosocial factors play an important role in the manifestation of the disease, especially in secondary enuresis. Diagnostical and therapeutical concepts have to consider the heterogeneity of this disorder. Evaluation studies were supported by effective intervention programs for nocturnal enuresis. But beneficial effects of treatments for functional urinary incontinence were not confirmed.

[Diagnostics of functional bladder disorders in children]. / Abklärung kindlicher Blasenfunktionsstörungen.

Functional bladder disorders are one of the most frequent urinary disorders in children. Today, we strictly differentiate enuresis from pediatric urinary incontinence. In most cases, these classifications will be achieved with non-invasive, primary diagnostic procedures. In monosymptomatic enuresis, further invasive examinations are not necessary. However, in pediatric urinary incontinence invasive diagnostic tools such as video-urodynamic studies are mandatory for a correct classification. Recently established guidelines on the diagnostic procedures for the evaluation of pediatric bladder disorders will help to standardize the diagnostic work-up.

[Clinical diagnosis of bladder dysfunction in enuretic children and adolescents]. / Diagnóstico clínico de disfunção miccional em crianças e adolescentes enuréticos.

OBJECTIVES: To estimate the predictive value of diurnal voiding symptoms for the diagnosis of bladder dysfunction in enuretic children and teenagers receiving care at Fernandes Figueira Institute (Rio de Janeiro, Brazil). METHODS: From June 1999 to May 2002, 91 patients (aged 5-17 years) with enuresis, both monosymptomatic and polysymptomatic, were assessed based on medical history, voiding chart, physical examination, and urodynamic studies. The medical history was investigated for detection of diurnal voiding symptoms. The predictive value of these symptoms for the diagnosis of bladder dysfunction was estimated. RESULTS: Bladder dysfunction was observed in 94.5% of the children and teenagers with enuresis. Medical history identified 97.3% of patients with diurnal voiding symptoms. Increased discharge of urine was detected exclusively by voiding chart in only 2.7% of the patients. The positive predictive value of diurnal voiding symptoms for bladder dysfunction was 98.6%. There was a statistically significant association between diurnal voiding symptoms and bladder dysfunction (p < 0.005). The risk for bladder dysfunction was approximately 20 times higher in presence of these symptoms. CONCLUSIONS: The presence of diurnal voiding symptoms was a strong predictor of bladder dysfunction. Medical history was a useful instrument for detecting diurnal voiding symptoms and establishing the diagnosis of bladder dysfunction.

Diagnóstico clínico de disfunção miccional em crianças e adolescentes enuréticos / Clinical diagnosis of bladder dysfunction in enuretic children and adolescents

OBJETIVO: Estimar o valor preditivo da presença de sintomas urinários diurnos para o diagnóstico de disfunção miccional em crianças e adolescentes enuréticos atendidos no Ambulatório de Urodinâmica do Instituto Fernandes Figueira. MÉTODOS: De junho de 1999 a maio de 2002, foram avaliados 91 pacientes, entre 5 e 17 anos de idade, portadores de enurese, mono ou polissintomática, através de anamnese, mapa da micção, exame físico e estudo urodinâmico. A anamnese baseou-se em um modelo desenvolvido para detecção de sintomas urinários diurnos. O valor preditivo da presença destes sintomas para o diagnóstico de disfunção miccional foi estimado neste grupo. RESULTADOS: O percentual de disfunção miccional entre as crianças e adolescentes atendidos por enurese no Ambulatório de Urodinâmica do Instituto Fernandes Figueira foi de 94,5 por cento. A anamnese identificou 97,3 por cento dos pacientes com sintomas urinários diurnos. Apenas 2,7 por cento dos pacientes apresentaram aumento da freqüência urinária detectado apenas pelo mapa da micção. O valor preditivo positivo da presença de sintomas urinários diurnos para o diagnóstico de disfunção miccional foi de 98,6 por cento. Houve associação, estatisticamente significante, entre sintomas urinários diurnos e disfunção miccional (p < 0,005), e o risco de a urodinâmica estar alterada foi de cerca de 20 vezes maior na presença destes. CONCLUSÕES: A presença de sintomas urinários diurnos apresentou um elevado valor preditivo positivo para disfunção miccional. A anamnese foi um instrumento útil para a detecção dos sintomas urinários diurnos, contribuindo para o diagnóstico de disfunção miccional.

Enuresis subtypes based on nocturnal hypercalciuria: a multicenter study.

PURPOSE: Desmopressin may not be effective for nocturnal enuresis associated with polyuria and hypercalciuria. Nighttime hypercalciuria in an enuretic population from 5 centers and its correlation with nighttime polyuria were verified. MATERIALS AND METHODS: A total of 450 enuretic patients (278 males, 172 females, mean age 9.7 years) were evaluated with 72-hour micturition charts, urinalysis, serum creatinine and osmolarity, diurnal and nocturnal electrolytes with fractional Na+ and K+ urinary excretion, and nocturnal (4 a.m.) plasma vasopressin. Creatinine electrolytes and osmolarity were measured in daytime (8 a.m. to 8 p.m.) and nighttime (8 p.m. to 8 a.m.) urine volumes. Patients were divided into group 1 with nocturnal polyuria and group 2 without nocturnal polyuria. Hypercalciuria was defined as urinary calcium-to-urinary creatinine ratio greater than 0.21. Statistic evaluation was performed using chi-square, Pearson correlation and ANOVA tests. RESULTS: Nighttime polyuria was demonstrated in 292 bedwetters (65% group 1). Nocturnal hypercalciuria was present in 179 of the 450 children (39.7%), including 125 in group 1 (42.8%) and 54 in group 2 (34.2%), which was statistically significant (chi-square p = 0.008, Pearson correlation test r = 0.157). Daytime calciuria was not statistically modified in either group (group 1 p = 0.054, group 2 p = 0.56). Adrenocorticotropic hormone (ADH) was normal in 18.5% and low in 81.5% of enuretics with nocturnal hypercalciuria. ADH levels and nocturnal hypercalciuria significantly correlated (p = 0.003, r = 0.148). Conversely, the group 2 patients had normal ADH levels. CONCLUSIONS: Nocturnal hypercalciuria has a pivotal role in nocturnal enuresis, as it is significantly associated with low ADH levels and nocturnal polyuria. A new classification of nocturnal enuresis subtypes based on nighttime calciuria levels is mandatory to address treatment properly.

The genetics of enuresis: a review.

PURPOSE: Formal studies of the genetics of enuresis have been performed since the 1930s and molecular genetics since 1995, both highlighting the importance of hereditary factors in the etiology of nocturnal enuresis. We summarize the current state of knowledge with respect to the genetics of nocturnal enuresis and its genotype-phenotype interactions. MATERIALS AND METHODS: A comprehensive review of the published data available on the genetic basis of enuresis was performed. RESULTS: Genetic factors are the most important in the etiology of nocturnal enuresis but somatic and psychosocial environmental factors have a major modulatory effect. Most commonly, nocturnal enuresis is inherited via an autosomal dominant mode of transmission with high penetrance (90%). However, a third of all cases are sporadic, and the difference between sporadic and familial forms is not known. Four gene loci associated with nocturnal enuresis have been identified but the existence of others is presumed (locus heterogeneity). All likely candidate genes have been excluded so far. There is no specific association among the different loci, type of wetting and other aspects of the phenotype. All subtypes of nocturnal enuresis (primary, secondary, combined day/night wetting) are susceptible to comparable genetic influences. Certain syndromes of day wetting follow their own genetic mechanisms but this association with the genetics of nocturnal enuresis is not known. CONCLUSIONS: Nocturnal enuresis is a common, genetic and heterogeneous disorder. The associations between genotype and phenotype are complex and are susceptible to environmental influences. Therefore, exact assessment of the clinical phenotype and identification of intermediary phenotypes or traits are needed. Future research will focus on the identification of genes, gene products and their interaction with environmental factors.

Sleep/Arousal and enuresis subtypes.

PURPOSE: The mechanisms responsible for enuresis are maturational delays and the extent of the maturational lag equates with the severity of the clinical picture. MATERIALS AND METHODS: A literature review was conducted comparing the similar mechanisms of bladder physiology in normal and children with enuresis. RESULTS: Several mechanisms are associated with enuresis including nocturnal urine volume, nocturnal functional bladder capacity, spontaneous bladder contractions and the inability to arouse to the stimulus of a large and/or contracting bladder. There is adequate evidence for children with enuresis who demonstrate nocturnal spontaneous bladder contractions (detrusor dependent enuresis) and nocturnal polyuria (volume dependent enuresis). A recent study has shown that children with enuresis are difficult to arouse in the first two-thirds of the night, which is also associated with the period of greatest wetting frequency. Night dry children may demonstrate daytime frequency and urgency, others may have nocturia and others are difficult to arouse. Subtyping into volume dependent and detrusor dependent types may only describe specific entities of a larger array of clinical presentations. CONCLUSIONS: It is proposed that the mechanisms responsible for enuresis are maturational delays and the extent of the maturational lag equates with the severity of the clinical picture. Included in this clinical spectrum are children who demonstrate diurnal incontinence and those with secondary enuresis. The former is a condition of maturational severity and the latter is a maturational change. The ability to arouse is fundamental to those who are continent.

Paediatric voiding dysfunction and enuresis.

Urinary incontinence and nocturnal enuresis are frequently encountered problems in children. In this review some aspects will be highlighted. Especially the different types of monosymptomatic nocturnal enuresis as well as some recent developments in children with dysfunctional voiding will be discussed.