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Effect of varying size of urethral catheters upon flow and resistance measurements
Author(s) -
Reid R. E.,
Chandrasekar D.,
Pugach R.,
Laor E.,
Tolia B. M.,
Freed S. Z.
Publication year - 1986
Publication title -
neurourology and urodynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.918
H-Index - 90
eISSN - 1520-6777
pISSN - 0733-2467
DOI - 10.1002/nau.1930050308
Subject(s) - medicine , catheter , flow resistance , surgery , urinary catheterization , urology , flow (mathematics) , geometry , mathematics
Abstract The effect of urethral catheters upon voiding parameters has been studied in eight patients. Each patient was studied sequentially with catheter sizes 3 1/2, 5, 8, and 10 F. Catheter free flow measurements are done before and after instrumentation. No significant changes were seen with varying catheter sizes if there was no clinical obstruction (two patients). In six patients with bladder outlet obstruction, flow diminished and resistance measurements increased with increasingly larger catheters.