Development of a Pediatric Age-Based and Weight-Adjusted Nomogram for Bladder Volumes Associated With Successful Completion of Transabdominal Pelvic Ultrasound. Pediatr Emerg Care 2025 Apr 01;41(4):311-314
Date
02/04/2025Pubmed ID
39901843DOI
10.1097/PEC.0000000000003344Scopus ID
2-s2.0-85217136635 (requires institutional sign-in at Scopus site)Abstract
OBJECTIVE: To develop a nomogram for pediatric bladder volumes associated with the successful completion of transabdominal pelvic ultrasound (TPU) in female pediatric patients presenting with lower abdominal and/or pelvic pain in the emergency department. This study hypothesizes that the target bladder volumes for successful TPU vary by age and weight.
METHODS: We retrospectively calculated bladder volumes on all successful transabdominal pelvic ultrasound studies during a 2-year period for patients 8 to 18 years old by ellipsoid bladder volume formula using the largest cross-sectional areas captured on transverse and longitudinal cine clips. Measurements were collected by 2 study personnel with initial measurements validated by a pediatric radiologist. Bladder volume by age and weight percentile groups were descriptively analyzed, and a quantile regression model was used to regress bladder volume on age adjusting for patient weight.
RESULTS: We analyzed bladder volumes from 1030 successful transabdominal pelvic ultrasound studies. The greatest drop in median volume was seen amongst non-overweight children in younger age groups. Nomogram bladder volumes for transabdominal pelvic ultrasound increase consistently with age and weight until approximately 13 years old and 60 kg, respectively, with minimal change thereafter in patients 13 to 18 years old.
CONCLUSIONS: We provide a pediatric age-based and weight-adjusted nomogram for bladder volumes associated with successful transabdominal pelvic ultrasound imaging. Further evaluation of its use is warranted to decrease inefficiency in bladder filling prior to TPU completion and improve timeliness in diagnosing pelvic emergencies.
Author List
Drayna PC, Johnson C, Chinta SS, Jaafar H, Thomas D, Visotcky A, Dupont AS, Kumbhar SAuthors
Patrick C. Drayna MD Associate Professor in the Pediatrics department at Medical College of WisconsinAmanda Dupont DO Assistant Professor in the Pediatrics department at Medical College of Wisconsin
Danny G. Thomas MD, MPH Professor in the Pediatrics department at Medical College of Wisconsin
Alexis M. Visotcky Program Director I in the Center for International Blood and Marrow Transplant Research department at Medical College of Wisconsin
MESH terms used to index this publication - Major topics in bold
Abdominal PainAdolescent
Age Factors
Body Weight
Child
Emergency Service, Hospital
Female
Humans
Nomograms
Organ Size
Pelvic Pain
Pelvis
Retrospective Studies
Ultrasonography
Urinary Bladder
