{"paper_id":"30477703-8766-4970-93d1-1f34f0cd97f3","body_text":"Abstract\nThe objective of the study was to determine the relative accuracy of a new portable ultrasound unit, BME-150A™, and the BladderScan™ BVI 3000, as assessed in comparison with the catheterized residual urine volume. We used both of these machines to prospectively measure the residual urine volumes of 89 patients (40 men and 49 women) who were undergoing urodynamic studies. The ultrasound measurements were compared with the post-scan bladder volumes obtained by catheterization in the same patients. The ultrasounds were followed immediately (within 5 min) by in-and-out catheterizations while the patients were in a supine position. There were a total of 116 paired measurements made. The BME-150A and the BVI 3000 demonstrated a correlation with the residual volume of 0.92 and 0.94, and a mean difference from the true residual volume of 7.8 and 3.6 ml, respectively. Intraclass correlation coefficients for the accuracy of the two bladder scans were 0.90 for BME-150A and 0.95 for BVI 3000. The difference of accuracy between the two models was not significant (p = 0.2421). There were six cases in which a follow-up evaluation of falsely elevated post-void residual urine volume measurements on the ultrasound studies resulted in comparatively low catheterized volumes, with a range of differences from 66 to 275.5 ml. These cases were diagnosed with an ovarian cyst, uterine myoma, or uterine adenomyosis on pelvic ultrasonography. The accuracy of the BME-150A is comparable to that of the BVI 3000 in estimating the true residual urine volumes and is sufficient enough for us to recommend its use as an alternative to catheterization.\nSimilar content being viewed by others\nAbbreviations\n- PVR:\n-\npost-void residual urine volume\n- BMI:\n-\nbody mass index\nReferences\nHolmes JH (1967) Ultrasonic studies of the bladder. J Urol 97:654–663\nAlnaif B, Drutz HP (1999) The accuracy of portable abdominal ultrasound equipment in measuring postvoid residual volume. Int Urogynecol J Pelvic Floor Dysfunct 10:215–218\nCoombes GM, Millard RJ (1994) The accuracy of portable ultrasound scanning in the measurement of residual urine volume. J Urol 152:2083–2085\nIreton RC, Krieger JN, Cardenas DD, Williams-Burden B, Kelly E, Souci T, Chapman WH (1990) Bladder volume determination using a dedicated, portable ultrasound scanner. J Urol 143:909–911\nRavichandran G, Fellows GJ (1983) The accuracy of a hand-held real time ultrasound scanner for estimating bladder volume. Br J Urol 55:25–27\nRevord JP, Opitz JL, Murtaugh P, Harrison J (1993) Determining residual urine volumes using a portable ultrasonographic device. Arch Phys Med Rehabil 74:457–462\nCardenas DD, Kelly E, Krieger JN, Chapman WH (1988) Residual urine volumes in patients with spinal cord injury: measurement with a portable ultrasound instrument. Arch Phys Med Rehabil 69:514–516\nMassagli TL, Cardenas DD, Kelly EW (1989) Experience with portable ultrasound equipment and measurement of urine volumes: inter-user reliability and factors of patient position. J Urol 142:969–971\nChan H (1993) Noninvasive bladder volume measurement. J Neurosci Nurs 25:309–312\nMainprize TC, Drutz HP (1989) Accuracy of total bladder volume and residual urine measurements: comparison between real-time ultrasonography and catheterization. Am J Obstet Gynecol 160:1013–1016\nHuang YH, Bih LI, Chen SL, Tsai SJ, Teng CH (2004) The accuracy of ultrasonic estimation of bladder volume: a comparison of portable and stationary equipment. Arch Phys Med Rehabil 85:138–141\nTeng CH, Huang YH, Kuo BJ, Bih LI (2005) Application of portable ultrasound scanners in the measurement of post-void residual urine. J Nurs Res 13:216–224\nCooperberg MR, Chambers SK, Rutherford TJ, Foster HE Jr (2000) Cystic pelvic pathology presenting as falsely elevated post-void residual urine measured by portable ultrasound bladder scanning: report of 3 cases and review of the literature. Urology 55:590\nAuthor information\nAuthors and Affiliations\nCorresponding author\nRights and permissions\nAbout this article\nCite this article\nChoe, J.H., Lee, J.Y. & Lee, KS. Accuracy and precision of a new portable ultrasound scanner, the BME-150A, in residual urine volume measurement: a comparison with the BladderScan BVI 3000. Int Urogynecol J 18, 641–644 (2007). https://doi.org/10.1007/s00192-006-0219-2\nReceived:\nAccepted:\nPublished:\nIssue date:\nDOI: https://doi.org/10.1007/s00192-006-0219-2","source_license":"public-domain-us","license_restricted":false}