Real-time flow resistance compensation for urodynamic examinations of the upper urinary tract through single lumen catheters

Sandor Lovasz, I. Romics

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We developed a special calculation method for the compensation of resistance in urodynamic studies of the upper urinary tract that allows us to use existing single lumen nephrostomy catheters. We integrated a new calibration routine into the setup of our urodynamic equipment. Following the initial calibration procedure using the same size catheter as the previously inserted nephrostomy catheter, our software calculates actual resistance based on actual flowrate and the known linear resistance-flow correlation. Actual resistance and calculated intrapelvic pressure curves are presented in real-time. Using single lumen nephrostomy catheters for pressure-flow studies allows us to consider intrapelvic pressure during the measurement, to adjust filling pressure accordingly. It makes time consuming and sophisticated postprocessing resistance calculation unnecessary and also provides a challenging new method for conventional urodynamic studies of the lower urinary tract.

Original languageEnglish
Pages (from-to)110-113
Number of pages4
JournalInternational Journal of Urology
Volume15
Issue number1
DOIs
Publication statusPublished - Jan 2008

Fingerprint

Urodynamics
Urinary Tract
Catheters
Pressure
Calibration
Software
Equipment and Supplies

Keywords

  • Flow resistance compensation
  • Pressure-flow studies
  • Single lumen nephrostomy catheter
  • Urodynamics of the upper urinary tract

ASJC Scopus subject areas

  • Urology

Cite this

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