A Study of the Validity of Voiding Pressure — Flow Plot Interpretation in Clinical Urodynamics

  • C. R. Chapple
  • J. G. Malone-Lee


The principles of urodynamic investigation and our approach to them using microcomputer technology have been described in the previous chapter. This paper describes a specific application of our technique to diagnosis. Although many departments have access to simple urodynamic procedures there are a number of situations where it is not possible, without the use of more complex investigations such as videocystometry, to exclude outflow obstruction or to clarify the pathology. In addition, the successful interpretation of urodynamic data is largely subjective and dependent on the investigator’s experience. We have studied an alternative method of diagnosing the presence of lower urinary tract obstruction from urodynamic traces, made possible by microcomputers, which is easier to use because it depends on “pattern recognition”. The human brain may be more efficient at interpreting the meaning of patterns than it is at interpreting numeric data. Microcomputers enable us to plot the analogue data obtained from urodynamic studies in a variety of different ways. We have used a microcomputer system, described in the previous chapter, to generate specific plots which have very characteristic patterns depending on the pathological circumstances.


Urodynamic Study Previous Chapter Detrusor Pressure Microcomputer System Urodynamic Investigation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Abrams PH, Griffiths DJ (1979) The assessment of prostatic obstruction from urodynamic measurements and from residual urine. Br J Urol 51: 129–134Google Scholar
  2. Chappie CR, Malone-Lee JG, Rickards D, Milroy EJG, Turner Warwick RT (1987) A comprehensive microcomputer software package for videocystometry, Neurol Urodynam 6: 208–209Google Scholar
  3. Griffiths DJ (1973) The mechanics of the urethra and of micturition. Br J Urol 45: 497–507PubMedCrossRefGoogle Scholar
  4. Griffiths DJ (1977) Urodynamic assessment of bladder function. Br J Urol 49: 29–36PubMedCrossRefGoogle Scholar
  5. Griffiths DJ (1980) Urodynamics: the mechanics and hydrodynamics of the lower urinary tract. Adam Hilger, BristolGoogle Scholar
  6. Malone-Lee JG (1987) Experience in software development for a microcomputer in clinical urodynamics. Neurol Urodynam 6: 200–201Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1988

Authors and Affiliations

  • C. R. Chapple
  • J. G. Malone-Lee

There are no affiliations available

Personalised recommendations