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目的:研究经直肠超声测量前列腺尿道角(PUA)、前列腺体积(PV)及残余尿(PVR)对评估膀胱出口梗阻的价值。方法:对145例有下尿路症状(LUTS)的患者行经直肠超声检测,观察患者膀胱出口梗阻指数(BOOI)、膀胱收缩指数(BCI)、最大尿流率(Qmax)与PUA、PV、PVR的相关性,以及应用PUA、PV、PVR预测膀胱出口梗阻(BOO)的价值。结果:PUA与BOOI的相关性比PV、PUA强;PV、PVR均与Qmax呈负相关;PV、PUA与BCI无相关性,PVR与BCI呈负相关;BOO患者中,多数PUA>35°、PV>30 ml、PVR>50 ml(P<0.05)。结论:经直肠超声测量PUA、PV、PVR评估BOO均有一定预测价值,其中PUA可以更好地预测是否存在BOO。
Objective: To study the value of transurethral ultrasonography in the measurement of prostatic urethral angle (PUA), prostatic volume (PV) and residual urine (PVR) in assessing bladder outlet obstruction. Methods: One hundred and forty-five patients with lower urinary tract symptoms (LUTS) underwent transrectal ultrasonography. The indexes of bladder outlet obstruction (BOOI), bladder contractility index (BCI), maximal flow rate (Qmax) and PUA, PV, And the value of predicting bladder outlet obstruction (BOO) using PUA, PV and PVR. Results: The correlation between PUA and BOOI was stronger than that of PV and PUA. PV and PVR were negatively correlated with Qmax. There was no correlation between PV and PUA and BCI. PVR and BCI were negatively correlated. Most PUA> 35 °, PV> 30 ml, PVR> 50 ml (P <0.05). CONCLUSIONS: The assessment of PUA, PV and PVR by transrectal ultrasound has certain predictive value for BOO. PUA can better predict the presence of BOO.