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Evaluation of the BladderScan(®) in estimating bladder volume in paediatric patients
Joanne Rowe1, Neil Price1, Vipul Upadhyay1
1Department of Paediatric Surgery and Urology, Starship Children's Health, Auckland District Health Board, Private Bag 92024, Auckland Mail Centre, Auckland 1142, New Zealand.
Insights
The BladderScan BVI 9400 accurately estimates pediatric bladder volume, showing high correlation with catheter volumes. This non-invasive device offers reliable measurements for clinical use in children.
Area of Science:
- Pediatric Urology
- Medical Imaging Technology
Background:
- Accurate bladder volume (BV) assessment is crucial in pediatric care.
- Traditional methods like catheterization can be invasive and uncomfortable for children.
Purpose of the Study:
- To assess the reliability of the BladderScan BVI 9400 (BS) for estimating bladder volume in children.
- To compare BS measurements with bladder volumes obtained via urinary catheterization (CV).
Main Methods:
- BladderScan BVI 9400 measurements were taken in 50 children (6 weeks to 14 years) prior to urinary catheter placement.
- BladderScan volumes were compared with catheter volumes (CV).
Main Results:
- A high correlation (rho = 0.96) was observed between BladderScan (BS) and catheter volumes (CV).
- The mean difference between BS and CV was -2.1 mL (SD 21 mL).
- In younger children (<36 months), the correlation remained strong (rho = 0.82).
Conclusions:
- The BladderScan BVI 9400 demonstrates high reliability for estimating pediatric bladder volume.
- The device offers a clinically agreeable, non-invasive alternative to catheterization for bladder volume assessment.
Objective:
To evaluate the reliability of estimates of bladder volume (BV) in children with the BladderScan BVI 9400 (BS) compared with the volume obtained at catheterization (CV).
Materials And Methods:
BV was measured using the BS in 50 children (age range 6 weeks-14 years) who required urinary catheter placement during surgery or urodynamic studies. BS measurements were taken prior to catheter insertion. BV was compared with CV.
Results:
BS volumes ranged from 0 to 513 mL (mean = 79 mL, median = 34 mL) and CV from 0 to 500 mL (mean = 81 mL, median = 31 mL). There was high correlation between the BS and CV measures (rho = 0.96). The mean difference between BS and CV volumes was -2.1 mL (SD 21). Where the CV ≤ 100 mL the BS volumes ranged from 0 to 84 mL (mean = 74 mL, median = 30 mL) and the CV from 0 to 88 mL (mean = 76 mL, median = 25 mL) (rho = 0.89). The mean difference = 0.5 mL (95% limits of agreement ± 23 mL). In a small sample of 12 children <36 months, correlation between BS and CV volumes was not as strong with rho = 0.82.
Conclusions:
Overall the BladderScan showed a high correlation with catheter volume and there was good clinical agreement between the measures.
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