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Analysis of pressure-flow data in terms of computer-derived urethral resistance parameters

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Summary

The simultaneous measurement of detrusor pressure and flow rate during voiding is at present the only way to measure or grade infravesical obstruction objectively. Numerous methods have been introduced to analyze the resulting data. These methods differ in aim (measurement of urethral resistance and/or diagnosis of obstruction), method (manual versus computerized data processing), theory or model used, and resolution (continuously variable parameters or a limited number of classes, the so-called nomogram). In this paper, some aspects of these fundamental differences are discussed and illustrated. Subsequently, the properties and clinical performance of two computer-based methods for deriving continuous urethral resistance parameters are treated.

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References

  1. Abrams PH, Griffiths DJ (1979) The assessment of prostatic obstruction from urodynamic measurements and from residual urine. Br J Urol 51:129–134

    Google Scholar 

  2. Abrams P, Blaivas JG, Stanton SL, Andersen JT (1988) The standardisation of terminology of lower urinary tract function. Scand J Urol Nephrol [Suppl] 114:5–19

    CAS  PubMed  Google Scholar 

  3. Griffiths DJ (1980) Urodynamics. The mechanics and hydrodynamics of the lower urinary tract. (Medical physics handbooks series, vol 4) Adam Hilger, Bristol

    Google Scholar 

  4. Griffiths D, Mastrigt R van, Bosch R (1989) Quantification of urethral resistance and bladder function during voiding, with special reference to the effects of prostate size reduction on urethral obstruction due to BPH. Neurourol Urodyn 8:17–27

    Google Scholar 

  5. Höfner K, Kramer AEJL, Tan HK, Grünewald V, Jonas U (1993) Chess classification of outflow obstruction based on pressure-flow analysis. Neurourol Urodyn 12:414–415

    Google Scholar 

  6. Jansen H, Mastrigt R van (1992) Transrectal ultrasound of the prostatic urethra related to urodynamically assessed urethral resistance. Neurourol Urodyn 11:401–403

    Google Scholar 

  7. Kranse M, Mastrigt R van (1991) Fitting orthogonal polynomials to the lowest part of a pressure flow plot. Neurourol Urodyn 10:290–291

    Google Scholar 

  8. Kranse M, Mastrigt R van (1991) The derivation of an obstruction index from a three parameter model fitted to the lowest part of the pressure flow plot. J Urol 145:261A

    Google Scholar 

  9. Mastrigt R van (1984) A computer program for on-line measurement, storage, analysis and retrieval of urodynamic data. Comp Prog Biomed 18:109–117

    Google Scholar 

  10. Mastrigt R van (1987) Urodynamic analysis using an one-line computer. Neurourol Urodyn 6:206–207

    Google Scholar 

  11. Mastrigt R van, Rollema HJ (1992) Prognostic value of bladder contractility in prostatectomy. J Urol 148:1856–1860

    Google Scholar 

  12. Mastrigt R van, Kranse M (1993) Automated evaluation of urethral obstruction. Urology 42:216–224

    Google Scholar 

  13. Mastrigt R van, Kranse M, Rollema HJ (1994) Testing the efficacy of treatment for infravesical obstruction with pressure flow data. Neurourol Urodyn 13:392–394

    Google Scholar 

  14. Pierce JM, Braun E, Sniderman AJ, Lewis HY (1963) The concept of resistance applied to the lower urinary tract. Surg Gynecol Obstet 116:217–222

    Google Scholar 

  15. Rollema HJ, Mastrigt R van (1987) Detrusor contractility before and after prostatectomy. Neurourol Urodyn 6:220–221

    Google Scholar 

  16. Rollema HJ, Mastrigt R van (1991) Objective analysis of prostatism; a clinical application of the computer program CLIM. Neurourol Urodyn 10:71–76 [Erratum in Neurourol Urodyn 10:267 (1991)]

    Google Scholar 

  17. Rollema HJ, Mastrigt R van (1992) Improved indication and follow-up in transurethral resection of the prostate (TUR) using the computer program CLIM. J Urol 148:111–116

    Google Scholar 

  18. Rollema HJ, Rosier P, Janknegt RA, Mastrigt R van (1991) Efficacy of alpha-blocker (doxazosin) in BPH appraised by pressure-flow (CLIM) analysis. Neurourol Urodyn 10:295–296

    Google Scholar 

  19. Rollema HJ, Mastrigt R van, Janknegt RA (1991) Urodynamic assessment and quantification of prostatic obstruction before and after transurethral resection of the prostate; standardization with the aid of the computer program CLIM. Urol Int 47 [Suppl 1]:52–54

    Google Scholar 

  20. Schäfer W (1983) The contribution of the bladder outlet to the relation between pressure and flow rate during micturition. In: Hinman F Jr (ed) Benign prostatic hypertrophy. Springer, New York Berlin Heidelberg, pp 470–498

    Google Scholar 

  21. Schäfer W (1985) Urethral resistance? Urodynamic concepts of physiological and pathological bladder outlet function during voiding. Neurourol Urodyn 4:161–201

    Google Scholar 

  22. Schäfer W, Waterbär F, Langen PH, Deutz FJ (1989) A simplified graphic procedure for detailed analysis of detrusor and outlet function during voiding. Neurourol Urodyn 8:405–407

    Google Scholar 

  23. Spangberg A, Teriö H, Engberg A, Ask P (1989) Quantification of urethral function based on Griffiths' model of flow through elastic tubes. Neuroural Urodyn. 8:29–52

    Google Scholar 

  24. Teriö H, Spangberg A, Engberg A, Ask P (1989) Estimation of elastic properties in the urethral flow controlling zone by signal analysis of urodynamic pressure/flow data. Med Biol Eng Comput 27:314–321

    Google Scholar 

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Authors and Affiliations

  1. Department of Urology-urodynamics, room EE630, Erasmus University Rotterdam, P.O. Box 1738, NL-3000 DR, Rotterdam, The Netherlands

    R. van Mastrigt & M. Kranse

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  1. R. van Mastrigt
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  2. M. Kranse
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van Mastrigt, R., Kranse, M. Analysis of pressure-flow data in terms of computer-derived urethral resistance parameters. World J Urol 13, 40–46 (1995). https://doi.org/10.1007/BF00182665

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  • DOI: https://doi.org/10.1007/BF00182665

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