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Related Experiment Videos

Bladder outflow after radical prostatectomy

F Montorsi1, F Bergamaschi, G Guazzoni

  • 1Department of Biomedical Sciences, Institute S. Raffaele, University of Milan School of Medicine, Italy.

International Urology and Nephrology
|January 1, 1993
PubMed
Summary
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Radical retropubic prostatectomy can cause bladder outflow obstruction in 22% of patients. Uroflowmetry is crucial for detecting this obstruction, unlike subjective symptom scoring.

Area of Science:

  • Urology
  • Oncology
  • Surgical Science

Background:

  • Radical retropubic prostatectomy is a common treatment for localized prostate cancer.
  • Postoperative bladder function is a critical concern for patient recovery and quality of life.

Purpose of the Study:

  • To assess postoperative bladder outflow in patients after radical retropubic prostatectomy.
  • To evaluate the reliability of subjective symptom scoring versus objective uroflowmetry in detecting obstruction.

Main Methods:

  • 150 patients undergoing radical retropubic prostatectomy were studied.
  • Postoperative peak flow rates and residual urine volumes were measured.
  • Uroflowmetry with flow nomograms was employed for obstruction assessment.

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Main Results:

  • Mean postoperative peak flow rate was 16.9 ml/s; mean residual urine volume was 11.4 ml.
  • 22% of patients exhibited postoperative bladder outflow obstruction.
  • Obstruction was attributed to stricture (12%) or bladder denervation (10%).
  • Subjective symptom scoring was unreliable; uroflowmetry accurately identified all obstructed cases.

Conclusions:

  • Radical retropubic prostatectomy can lead to mechanical and functional changes in the lower urinary tract.
  • Objective assessment of postoperative bladder outflow using uroflowmetry is essential.
  • Uroflowmetry is superior to subjective symptom scoring for detecting postoperative bladder outflow obstruction.