Abstract: Objective To apply the urethral pressure profile(UPP)in patients with benign prostates hypertrophy(BPH).Methods 71 patients with BPH accepted the test of UPP.The UPP parameters were compared statistically with the ultrasonography finding.Results The maximum urethral pressure,maximum urethral closure pressure and prostatic urethral length in BPH were higher than normal(P<0.01).Conclusion The test of urethral pressure profile(UPP)is helpful for identifying the site of obstruction and degrees in BPH patients,although there are some limits.

Key words: benign prostates hypertrophy, urethral pressure profile, bladder outlet obstruction