The British journal of radiology · 2026
Is exceeding estimated bladder capacity during voiding cystourethrograms harmful?
СтатьяНазвание и аннотация: Перевод в очереди
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DeFlorio Robert M, Epelman Monica S, Christnacht Kimberly, Zheng Henry, Shah Chetan C
Аннотация
OBJECTIVES: The purpose of this study was to compare the actual bladder capacity of children undergoing voiding cystourethrogram (VCUG) with existing formula-derived estimates and to describe any adverse effects of bladder overdistention during VCUG.
METHODS: This retrospective study involved review of 884 consecutive VCUG performed over 3 years. Cases with underlying conditions that could artificially increase bladder capacity, such as neurogenic bladders or vesicoureteral reflux, were excluded.
RESULTS: Included were 440 normal VCUG procedures. Bladder volumes exceeded the expected bladder capacity set by the American Academy of Pediatrics (AAP) and American College of Radiology in 284 VCUG (65%). Of 261 VCUG performed on children <2 years of age, 164 (63%) VCUG exceeded the expected capacity. In the 2- to 14-year-old age group, 113 (68%) of the 165 VCUG performed exceeded the expected bladder capacity. Among the 14 VCUG performed on children >14 years of age, 7 (50%) exceeded the bladder capacity. No adverse effects were found after the VCUG in the 32 VCUG (7.3%) requiring a contrast volume of more than 2 times the AAP estimates and in the 22 VCUG studies (5%) requiring a contrast volume of more than 3 times the AAP estimates.
CONCLUSION: This study suggests that current guidelines often underestimate bladder capacity, and exceeding the expected bladder capacity appears to be reasonably safe without the occurrence of complications.
ADVANCES IN KNOWLEDGE: Current AAP guidelines often underestimate the capacity of the urinary bladder. Exceeding the expected bladder capacity appears to be reasonably safe.
METHODS: This retrospective study involved review of 884 consecutive VCUG performed over 3 years. Cases with underlying conditions that could artificially increase bladder capacity, such as neurogenic bladders or vesicoureteral reflux, were excluded.
RESULTS: Included were 440 normal VCUG procedures. Bladder volumes exceeded the expected bladder capacity set by the American Academy of Pediatrics (AAP) and American College of Radiology in 284 VCUG (65%). Of 261 VCUG performed on children <2 years of age, 164 (63%) VCUG exceeded the expected capacity. In the 2- to 14-year-old age group, 113 (68%) of the 165 VCUG performed exceeded the expected bladder capacity. Among the 14 VCUG performed on children >14 years of age, 7 (50%) exceeded the bladder capacity. No adverse effects were found after the VCUG in the 32 VCUG (7.3%) requiring a contrast volume of more than 2 times the AAP estimates and in the 22 VCUG studies (5%) requiring a contrast volume of more than 3 times the AAP estimates.
CONCLUSION: This study suggests that current guidelines often underestimate bladder capacity, and exceeding the expected bladder capacity appears to be reasonably safe without the occurrence of complications.
ADVANCES IN KNOWLEDGE: Current AAP guidelines often underestimate the capacity of the urinary bladder. Exceeding the expected bladder capacity appears to be reasonably safe.