Original Article
Comparison of the validity of bladder volume measurement by four different kinds of ultrasound devices
2017 Volume 20 Issue 4 Pages 420-425
Details
2017 Volume 20 Issue 4 Pages 420-425
Purpose
Ultrasound measurements of residual urine volume is important for nursing care in the urination disorder. The aim of the study was to compare the bladder volume estimated with the ultrasound device（desktop-type device, hand-held devices, Bladder ScanTM）.
Methods
Subjects included 13 adult volunteers（8 men, 5 women aged 43.2 ± 9.4 years）. The ultrasound devices included a ViamoTM（Vi: TOSHIBA MEDICAL SYSTEMS, Corp.）, a Vscan（Vs: GE HELTHCARE Japan, Corp.）, SONIMAGE P3（P3: KONICA MINOLTA, Inc）, BVI 6100（BVI: SYSMEX, Com.）. Urine volume was measured with the Vi and Vs by measuring the long diameter of the bladder from images in horizontal cross-section and its anteroposterior diameter and short diameter from sagittal-section images and calculating the volume using the formula（long diameter（w）× short diameter（d）× anteroposterior diameter（h））/2. On the P3, the “Bladder Volume" mode was used for the calculation. The mean values for the actual measured urine volume and the urine volumes measured by each method were calculated.
Results
The mean actual measured value was 236.8 ± 125.9 mL（65-425 mL）. The error rates were Vi（50.5 ± 13.3%）, Vs（55.1 ± 14.7 %）, P3（20.3 ± 16.6 %）, BVI（32.3 ± 27.4 %）. A high correlation was demonstrated between true volumes and ultrasound estimation（r=0.84-0.96）.
Conclusion
Our results showed that the P3 had a comparatively lower error rate than the ultrasound devices, hand-held multipurpose devices should be used in routine clinical nursing practice.
