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Quantifying the effect of urodynamic catheters on urine flow rate measurement.
- Source :
-
Neurourology and urodynamics [Neurourol Urodyn] 2012 Jan; Vol. 31 (1), pp. 139-42. Date of Electronic Publication: 2011 Sep 26. - Publication Year :
- 2012
-
Abstract
- Introduction: The effect of urodynamic catheters on urine flow rate (Q(max) ) is well documented but under-researched. Several studies show reduced Q(max) but methodologies and patient demographics differ. The aims of this study were to further quantify the effect of urodynamic catheters on Q(max) and to explore if this was consistent across different urodynamic diagnoses.<br />Methods: Four groups of 50 consecutive men attending for urodynamic studies (UDS) were retrospectively analyzed: Group 1 comprised 50 men with normal UDS, Group 2 was 50 men with BOO, and Group 3 contained 50 men with detrusor underactivity. Groups 1-3 had UDS performed using both 10 Fr filling and 4 Fr measuring catheters in situ. Group 4 comprised 50 men who had UDS performed with a smaller catheter assembly (8 Fr dual-lumen). Values of Q(max) with and without catheters present were compared using paired Student's t-tests. Differences between groups were compared using ANOVA.<br />Results: Q(max) measured during UDS in men from Groups 1-3 showed a mean reduction of 38% compared to Q(max) from "free" uroflowmetry. ANOVA indicated this reduction was significantly greater among men with normal UDS. Interestingly the group who underwent UDS with a smaller catheter assembly showed no significant reduction in Q(max) measured with catheters in situ.<br />Conclusion: Our findings are in line with previous work suggesting that smaller calibre urethral catheters do not cause a significant obstructive effect during voiding. In addition it would appear that the reduction in Q(max) with larger urethral catheters in situ is greatest in those with normal urodynamics.<br /> (Copyright © 2011 Wiley Periodicals, Inc.)
- Subjects :
- Adolescent
Adult
Aged
Aged, 80 and over
Humans
Male
Middle Aged
Retrospective Studies
Urinary Bladder physiology
Urinary Bladder physiopathology
Urinary Bladder Neck Obstruction physiopathology
Urination Disorders physiopathology
Young Adult
Catheters, Indwelling
Urinary Catheterization instrumentation
Urination physiology
Urodynamics physiology
Subjects
Details
- Language :
- English
- ISSN :
- 1520-6777
- Volume :
- 31
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Neurourology and urodynamics
- Publication Type :
- Academic Journal
- Accession number :
- 21953734
- Full Text :
- https://doi.org/10.1002/nau.21188