Document Detail

A randomized comparison of microtip and air-charged catheter for the measurement of maximum urethral closure pressure.
MedLine Citation:
PMID:  23342881     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Measurements of maximum urethral closure pressure (MUCP) are a part of urodynamic investigations preceding an incontinence surgery and a part of urethral function tests.
OBJECTIVES: The aim of the study was to compare maximum urethral closure pressure determined by a microtip catheter with those measured by an air-charged catheter.
MATERIAL AND METHODS: A prospective randomized study in a tertiary referral centre. 122 female patients with urodynamic stress incontinence were randomly assigned to have their urethral pressure profiles measured at rest by both microtip and air-charged catheters.
INTERVENTION AND MEASUREMENTS: Each patient had three measurements taken by each catheter type. Means of the measurements were compared with regard to correlation and repeatability. For statistical analysis, an approach proposed by Bland-Altman was applied to assess the agreement between the two techniques.
RESULTS: Correlation coefficient between MUCP by the air-charged and the microtip catheter was r=0.8507 (95% CI 0.7928 - 0.8934; p<0.0001). MUCP by the air-charged catheter was significantly lower than MUCP measured by the microtip catheter. The two-tailed p value was <0.0001, considered extremely significant. (95% CI of the differences; mean difference = -3.033; mean of paired differences -3.730 to -2.335). Discrepancies between measurements of the microtip and the air-charged catheters suggest good agreement between the two catheters since the mean difference was 2.8 cmH2O and the 95% CI of agreement were narrow with -0.03319 to 0.3151.
CONCLUSION: Air-charged catheters give lower readings for MUCP than microtip catheters with a good agreement between the two catheters.
Martin M Mueller; Marc U Baumann; Michael D Mueller; Annette Kuhn
Publication Detail:
Type:  Comparative Study; Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  Ginekologia polska     Volume:  83     ISSN:  0017-0011     ISO Abbreviation:  Ginekol. Pol.     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2013-01-24     Completed Date:  2013-03-01     Revised Date:  2014-07-31    
Medline Journal Info:
Nlm Unique ID:  0374641     Medline TA:  Ginekol Pol     Country:  Poland    
Other Details:
Languages:  eng     Pagination:  586-9     Citation Subset:  IM    
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MeSH Terms
Catheterization / instrumentation*
Middle Aged
Predictive Value of Tests
Prospective Studies
Transducers, Pressure*
Urinary Catheterization / instrumentation*
Urinary Incontinence, Stress / diagnosis*,  physiopathology*
Urodynamics / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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