Coombes G M, Millard R J
Department of Urology, Prince Henry Hospital, Sydney, Australia.
J Urol. 1994 Dec;152(6 Pt 1):2083-5. doi: 10.1016/s0022-5347(17)32314-5.
The accuracy of 2 successive models of a portable (2.5 kg.) ultrasound unit in determining residual urine volumes in 100 patients was assessed. Ultrasound measurements were compared to post-scan bladder volumes obtained by catheterization and fluoroscopic screening in the same patients. The first ultrasound unit (group 1, 50 patients) showed correlation with residual volumes of 0.86 (R2 = 0.73) and a mean difference from the true residual volume of 41 ml. (95% confidence interval 26 to 55 ml.). The second ultrasound unit (group 2, 50 patients) showed correlation with residual volumes of 0.97 (R2 = 0.94) and a mean difference from the true residual volume of 24 ml. (95% confidence interval 17 to 31 ml.). The differences in volumes were significantly lower with scanner 2 (t = 2.02, p = 0.047). The mean difference between catheter volume estimate and true bladder volume was 25 ml. (95% confidence interval 16 to 34 ml.). The accuracy of the BladderScan BVI 2500+ scanner is as good as catheter estimations of true residual volume and is sufficient to recommend its use as an alternative to catheterization for the determination of residual urine volume.
评估了一款便携式（2.5千克）超声设备的两代连续型号在测定100例患者残余尿量方面的准确性。将超声测量结果与同一批患者通过导尿和荧光透视检查获得的扫描后膀胱容量进行了比较。第一代超声设备（第1组，50例患者）显示与残余尿量的相关性为0.86（R2 = 0.73），与真实残余尿量的平均差异为41毫升（95%置信区间26至55毫升）。第二代超声设备（第2组，50例患者）显示与残余尿量的相关性为0.97（R2 = 0.94），与真实残余尿量的平均差异为24毫升（95%置信区间17至31毫升）。使用扫描仪2时，尿量差异显著更低（t = 2.02，p = 0.047）。导尿管容量估计值与真实膀胱容量之间的平均差异为25毫升（95%置信区间16至34毫升）。BladderScan BVI 2500+扫描仪的准确性与导尿管对真实残余尿量的估计相当，足以推荐将其用作测定残余尿量时替代导尿的方法。
