Related Experiment Video
Updated: Jun 28, 2026

Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood
Published on: October 2, 2019
The effect of familial aggregation on the children with primary nocturnal enuresis
Qing Wei Wang1, Jian Guo Wen, Qing Hua Zhu
1Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
Insights
Familial aggregation significantly impacts pediatric nocturnal enuresis (NE), leading to more severe symptoms and bladder dysfunction in affected children. Early urodynamic studies are recommended for diagnosis and treatment.
Area of Science:
- Pediatric Urology
- Nephrology
- Genetics
Background:
- Nocturnal enuresis (NE) is a common condition in children.
- Familial aggregation suggests a genetic component in some NE cases.
- Understanding the impact of familial aggregation is crucial for effective management.
Purpose of the Study:
- To evaluate the effect of familial aggregation on children with nocturnal enuresis (NE).
- To assess nocturnal urine output, bladder function, and arousal patterns in children with NE.
- To compare outcomes between familial aggregation NE (FPNE) and sporadic NE (SPNE).
Main Methods:
- Inclusion of 45 children with FPNE, 70 with SPNE, and 10 controls.
- Utilized questionnaires for arousal from sleep (AS scores), bladder diaries, and daytime urodynamic studies.
- Analyzed data based on familial history of NE across three generations.
Main Results:
- FPNE cases showed higher incidences of severe NE, non-monosymptomatic NE, small bladder, daytime detrusor overactivity, and urodynamic functional bladder outflow obstruction compared to SPNE.
- Nocturnal urine output and AS scores were higher, and maximal voided volume was smaller in both NE groups versus controls.
- Maximum cystometric capacity significantly decreased from control to FPNE groups.
Conclusions:
- Familial aggregation significantly influences the severity and bladder dysfunction in pediatric NE.
- FPNE is associated with more severe symptoms and poorer bladder function.
- Urodynamic studies are beneficial for diagnosing and treating children with FPNE.
Objective:
To evaluate the effect of familial aggregation on the children with PNE by evaluating nocturnal urine output, bladder, and arouse function.
Patients And Methods:
According to whether relatives of family of probands over three generations were affected by PNE, forty-five children with familial aggregation PNE (FPNE), seventy children with sporadic PNE (SPNE) and ten children with normal lower urinary tract function but waiting for operation (control group) were included. Questionnaire of arousal from sleep (AS scores), bladder diary and daytime urodynamic studies were performed in all patients.
Results:
The incidences of severe PNE and nonmonosymptomatic PNE in FPNE group were significantly higher than those in SPNE group. The nocturnal urine output and AS scores in both PNE groups was significantly higher, maximal voided volume significantly smaller than those in control group. Moreover, the incidences of small bladder in FPNE group was 44%, significantly higher than that in SPNE group (21%), but no significantly difference was found in nocturnal polyuria and arousal AS scores between two PNE groups. There were 53% patents with daytime detrusor overactivity and 60% patents with urodynamic functional bladder outflow obstruction in FPNE group, significantly higher than those in SPNE group (19% and 37%). Maximum cystometric capacity significantly decreased from control group to FPNE group.
Conclusion:
Familial aggregation has significant effects on the children with PNE, and FPNE are more likely to be severe symptoms and bladder dysfunction. It would be beneficial to have an urodynamic study for their diagnosis and treatment. Neurourol. Urodynam. 28:423-426, 2009. (c) 2008 Wiley-Liss, Inc.
Related Concept Videos
Nursing Assessment of the Genitourinary System I: Health History
Nightmares and Night Terrors
Nightmares often...
The Micturition Reflex
The process begins with bladder filling, where the bladder wall stretches as urine accumulates. This stretching activates the urine storage reflex, mediated by the sacral spinal segments and the pontine storage center. Efferent sympathetic impulses stimulate the detrusor muscle to relax and the internal urethral sphincter to contract, facilitating urine...
Cause and Effect
Diabetes Insipidus II: Pathophysiology
Microbiota of the Urogenital Tract