We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Importance of prostate volume and urinary flow rate in prediction of bladder outlet obstruction in men with symptomatic benign prostatic hyperplasia.
- Authors
Trumbeckas, Darius; Milonas, Daimantas; Jievaltas, Mindaugas; Matjosaitis, Aivaras Jonas; Kincius, Marius; Grybas, Aivaras; Kopustinskas, Vytis
- Abstract
Objectives. To predict bladder outlet obstruction with parameters of non-invasive investigations for patients with symptomatic benign prostatic hyperplasia. Patients and methods. A sample of 122 men with moderate to severe lower urinary tract symptoms suggestive of benign prostatic hyperplasia was selected. Transrectal prostate ultrasound, free flow measurement, and transabdominal ultrasound for residual urine were carried out together with digital rectal examination for all patients. All patients underwent urodynamic pressure/ flow test. Two groups of obstructed (91 patient) and equivocal/unobstructed (31 patient) were analyzed. Probabilistic model based on logistic regression was developed for prediction of obstruction. Results. Various parameters were compared in obstructed and non-obstructed/equivocal groups, highlighting important parameters for obstruction. Correlation analysis indicates higher obstruction dependence on average and peak flow rates and lower dependence on total prostate and transition zone volumes, transition zone index. Binary logistic regression model suggests that average flow rate combined with total prostate volume is the best predictor of obstruction (83% of correct predictions; PPV = 92%; NPV = 52%) in the analyzed sample. The analyzed model suggests that peak flow rate could also be almost equally important parameter instead of average flow rate. Conclusions. The study suggests that average/peak flow rate combined with total prostate volume can be used for prediction of obstruction. The developed probabilistic model helps to determine patients who need invasive urodynamic testing for decision on surgical treatment.
- Subjects
PROSTATE; URINE; BLADDER; BENIGN prostatic hyperplasia; CANCER in men; PATIENTS
- Publication
Central European Journal of Urology, 2011, Vol 64, Issue 2, p75
- ISSN
0500-7208
- Publication type
Article
- DOI
10.5173/ceju.2011.02.art5