INTRODUCTION: The aim of this study is to evaluate intra and inter-observatory variability in the sonography measurement of bladder volume. MATERIALS AND METHODS: We have evaluated 138 patients (128 men and 10 women) affected by lower urinary tract symptoms with a mean age of 64 years (range 36-75) between December 2000 and June 2001. Sonography measurement of bladder volume was obtained at the end of a pressure/flow study with the double lumen catheter in situ. Measurement of bladder volume was performed by the same operator in 113 patients by calculating the transverse, longitudinal and anterior-posterior diameter; each measurement was repeated three times. In the remaining 25 patients examination was performed by three different operators for every patients, with a single evaluation for each operator. The real volume was measured by emptying the bladder using the urethral catheter. RESULTS: The real bladder volume in the intra and inter-observatory group was 240 +/- 130 and 145 +/- 97, respectively. First, second and third measurement in the intra-observatory group were 229 +/- 113, 231 +/- 112, 234 +/- 127, respectively. On the other hand, first, second and third measurement in the inter-observatory group were 131 +/- 73, 129 +/- 66, 143 +/- 94, respectively. CONCLUSIONS: Looking at our results, it is clear that there is no significant difference between every single measurement in the intra and inter-observatory group. In addition, the estimation of bladder volume by ultrasound was quite similar to the real volume. We conclude that ultrasound is a precise, non invasive and highly reproducible technique to calculate the bladder volume.
Introduction: The aim of this study is to evaluate intra and inter-observatory variability in the sonography measurement of bladder volume. Materials and methods: We have evaluated 138 patients (128 men and 10 women) affected by lower urinary tract symptoms with a mean age of 64 years (range 36-75) between December 2000 and June 2001. Sonography measurement of bladder volume was obtained at the end of a pressure/flow study with the double lumen catheter in situ. Measurement of bladder volume was performed by the same operator in 113 patients by calculating the transverse, longitudinal and anterior-posterior diameter; each measurement was repeated three times. In the remaining 25 patients examination was performed by three different operators for every patients, with a single evaluation for each operator. The real volume was measured by emptying the bladder using the urethral catheter. Results: The real bladder volume in the intra and inter-observatory group was 240±130 and 145±97, respectively. First, second and third measurement in the intra-observatory group were 229±113, 231±112, 234±127, respectively. On the other hand, first, second and third measurement in the inter-observatory group were 131±73, 129±66, 143±94, respectively. Conclusions: Looking at our results, it is clear that there is no significant difference between every single measurement in the intra and interobservatory group. In addition, the estimation of bladder volume by ultrasound was quite similar to the real volume. We conclude that ultrasound is a precise, non invasive and highly reproducible technique to calculate the bladder volume.
Sonography measurement of bladder Volume
PARADISO GALATIOTO, Giuseppe;VICENTINI, Carlo
2002-01-01
Abstract
Introduction: The aim of this study is to evaluate intra and inter-observatory variability in the sonography measurement of bladder volume. Materials and methods: We have evaluated 138 patients (128 men and 10 women) affected by lower urinary tract symptoms with a mean age of 64 years (range 36-75) between December 2000 and June 2001. Sonography measurement of bladder volume was obtained at the end of a pressure/flow study with the double lumen catheter in situ. Measurement of bladder volume was performed by the same operator in 113 patients by calculating the transverse, longitudinal and anterior-posterior diameter; each measurement was repeated three times. In the remaining 25 patients examination was performed by three different operators for every patients, with a single evaluation for each operator. The real volume was measured by emptying the bladder using the urethral catheter. Results: The real bladder volume in the intra and inter-observatory group was 240±130 and 145±97, respectively. First, second and third measurement in the intra-observatory group were 229±113, 231±112, 234±127, respectively. On the other hand, first, second and third measurement in the inter-observatory group were 131±73, 129±66, 143±94, respectively. Conclusions: Looking at our results, it is clear that there is no significant difference between every single measurement in the intra and interobservatory group. In addition, the estimation of bladder volume by ultrasound was quite similar to the real volume. We conclude that ultrasound is a precise, non invasive and highly reproducible technique to calculate the bladder volume.Pubblicazioni consigliate
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