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Comparative Study
. 1996 Aug;37(4):365-8.

Clinical utility of a portable ultrasound scanner in the measurement of residual urine volume

Y Y Ding  1 , S Sahadevan, W S Pang, P W Choo
Affiliations
  • PMID: 8993133
Comparative Study

Clinical utility of a portable ultrasound scanner in the measurement of residual urine volume

Y Y Ding et al. Singapore Med J. 1996 Aug.

Abstract

Background: Post-voiding residual urine volume is an important investigation in the management of voiding dysfunction. Catheterisation is widely regarded as the "gold" standard method of measurement. We investigated the performance of a portable ultrasound scanner (Bladder Scan BVI-2500), as an alternative method of measurement.

Methods: This study was prospective in nature. One hundred measurements of post-voiding residual urine volume by ultrasound were compared with measurements by catheterisation.

Results: The mean absolute error of the scanner was 52 mL. For volumes below 200 mL and 100 mL, this was 36 mL and 24 mL respectively. A decision regarding whether to decompress the bladder by catheterisation would have also been correct in 86% to 89% of instances, depending on the cut-off value of the residual volume used. In other words, the ultrasound measurement would have been correct in 9 out of 10 clinical cases.

Conclusion: We recommend the routine use of portable ultrasound scanners of similar accuracy in the measurement of post-voiding residual urine volume.

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