Infravesical Obstruction Index in Patients with Benign Prostatic Hyperplasia is the Best?

Objective: The aim of the study is to evaluate the correlation among the factors such as the International prostate symptom score (IPSS), uroflowmetry (Qmax), prostate volume and postvoiding residue (PVR) in predicting infravesical obstruction in patients with benign prostate hyperplasia. Methods: The data of 134 patients referred to the urology outpatient clinic between January 2010 and December 2010 were retrospectively reviewed. The patients were distributed in three groups according to IPSS values; 1st, lower IPSS group (n=35), 2nd, moderate IPSS group (n=67) and 3rd, higher IPSS group (n=32). IPSS, prostate volume, postvoiding residue (PVR), and maximum urine flow (Qmax) values were compared. Prostate volumes and PVR were evaluated with suprapubic ultrasound. The patients with comorbidities which may affect voiding function were excluded from the study. Results: The mean age and IPSS of study patients were 55.6 (43-88) and 13.5 (0-35) respectively. Mean prostate volume and PVR of the 3rd group were significantly higher compared to the 1st and 2nd groups. Conclusion: Although IPSS is a subjective finding of infravesical obstruction, a higher score in patients with lower urinary tract symptoms is in parallel with the objective parameters such as Qmax and PVR. (JAREM 2012; 2: 109-12)