经腹超声测量膀胱内前列腺突入程度在良性前列腺梗阻诊断中的价值

目的:探讨经腹超声测定膀胱内前列腺突入程度(IPP)在良性前列腺梗阻(BPO)诊断中的价值。方法:收集2005年4月～2006年12月以下尿路症状就诊的BPH患者109例,应用经腹超声测定IPP,同时行尿流动力学检查测定最大尿流率(Qmax)、最大尿流率时逼尿肌压力(PdetQmax),并计算AG数(Pdetmax-2Qmax),根据AG数>40为梗阻,将所有患者分别归入非梗阻组(n=40)和梗阻组(n=69)。结果:在梗阻组和非梗阻组中IPP存在显著差异(P<0.01),IPP与AG数呈显著正相关(r=0.729,P=0.001)。若以IPP≥10mm为标准判断BPO,敏感度为89.9%,特异度97.5%,准确度为92.7%。结论:应用经腹超声测定IPP对BPO有良好的诊断价值。

Transabdominal Ultrasound Measurement of Intravesical Prostatic Protrusion Helps Diagnosis of Benign Prostatic Obstruction

OBJECTIVE: To evaluate the measurement of intravesical prostatic protrusion (IPP) by transabdominal ultrasonography (TAUS) in the diagnosis of benign prostatic obstruction (BPO). METHODS: We studied the clinical data of 109 BPH patients referred for lower urinary tract symptoms (LUTS) from April 2005 to December 2006. IPP was measured by TAUS, urodynamic parameters such as Qmax and PdetQmax obtained by urodynamic studies and AG values calculated. The patients were divided into an obstruction and a non-obstruction group according to their AG values. RESULTS: IPP was found statistically different between the obstruction and non-obstruction groups (P<0.001) and positively correlated with the AG value (r=0.729, P=0.001). With the cutoff at IPP > or = 10 mm for the diagnosis of BPO, the sensitivity, specificity and accuracy of the diagnosis were 89.9%, 97.5% and 92.7%, respectively. CONCLUSION: The measurement of IPP by TAUS offers a valuable help for the diagnosis of BPO.