Accuracy of Residual Urine Volume Determination by Ultrasonography.
- Author:
Jeong Keun LEE
1
;
Soon Chan KIM
;
Sam Keuk NAM
Author Information
1. Department of Urology, Seoul Adventist Hospital, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Residual urine volume;
Ultrasonography
- MeSH:
Catheterization;
Catheters;
Humans;
Ultrasonography*;
Urinary Bladder
- From:Korean Journal of Urology
1994;35(4):365-369
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The determination of the residual urine volume is an essential part of the investigation of many urological patients. particularly those with suspected urinary outflow obstruction. In 31 patients, we measured 3 internal bladder diameters ( height, width and depth) by transabdominal ultrasonography and calculated the residual urine volume by formula for ellipsoid (V= phi /6 xH xW xD).The real volume was obtained by the catheterization and compared with the sonographic measurement. There was a best correlation (r=0.9748) between calculated and true volumes provided a correction factor of 1.15 was applied. The advantages of ultrasonography for assessing residual urine volume are that it is simple, quick, harmless, non-invasive and readily repeatable. If the basic equipment is available, the ultrasonography should replace the catheterization.
