Abstract: Objective To investigate the impact of detrusor hyperactivity with impaired contractile function(DHIC)on voiding function in benign prostatic hyperplasia(BPH).Methods68 patients with BPH accepted the test of urodynamics.The urodynamic parameters between DHIC group and no DHIC group were compared statistically.ResultsThe residual urine in DHIC group was larger and the detrusor pressure at Qmax,the bladder volume were smaller than that in no DHIC group(P<0.01).ConclusionDHIC worsens the voiding function of the patients with BPH,and the test of urodynamic is helpful to diagnose and to treat it.

Key words: benign prostatic hyperplasia(BPH), detrusor hyperactivity with impaired contractile function(DHIC), urodynamin