Abstract:

Objective  To evaluate the value of prostate volume（PV）, intravesical prostatic protrusion（IPP） and bladder-urethra angle（BUA） as predictors of acute urinary retention （AUR） in men with benign  prostate hyperhlasia（BPH）. Methods  40 BPH patients were divided into 2 groups. 22 patients in AUR group had surffered AUR at least one time, while the other18 patients had never underwent AUR, measured PV、IPP 、 BUA by MRI, and make a relative analysis. Results  In the clinical data, there was no significance in the PV and IPP between two groups(P＞0.05). There was a statistical significance in the BUA between two groups (P＜0.05）.When BUA is over 45°, there is a risk of 88.9%  developing AUR. Conclusions  BUA is one of the indicators  to predict whether BPH patients have the probability of developing AUR. BUA measured by MRI is a simple way to assess AUR in BPH patients.

Key words: Bladder-urethra angle；Benign prostate hyperplasia；Acute urinary retention