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目的 :研究前列腺移行区体积 ( TV)及移行区指数 ( TZI)对膀胱出口梗阻 ( BOO)的诊断价值。方法 :选入 6 3例前列腺增生症 ( BPH)患者 ,将直肠 B超结果与压力 -流率测定结果进行比较。结果 :当 TZI>0 .4时 ,诊断BOO的敏感性 ( 76 .9% )及特异性 ( 10 0 % )最好 ;当 TZI<0 .3时 ,诊断无 BOO的敏感性与 TV<10 cm3相同( 72 .7% ) ,但 TZI的特异性 ( 5 3.3% )较 TV的特异性 ( 44 .4% )稍好 ;当 TZI处于 0 .3～ 0 .4时 ,如 TV>15 cm3或有前列腺突入膀胱时 ,应视为 BOO可能存在。结论 :TV及 TZI可以作为尿动力学检查之外的诊断 BOO的补充方法 ,但不能代替尿动力学检查
Objective: To study the diagnostic value of volume (TV) and transition zone index (TZI) of prostate transitional region in bladder outlet obstruction (BOO). Methods: Totally 63 benign prostatic hyperplasia (BPH) patients were enrolled in this study. The result of rectal ultrasonography was compared with the pressure-flow rate measurement. Results: The sensitivity (76.9%) and specificity (100%) of diagnosis of BOO were the best when the TZI was> 0.4, the sensitivity of diagnosis of BOO without TZI was less than 10 cm3 (72.7%), but the specificity of TZI (53.3%) was slightly better than that of TV (44.4%). When TZI was between 0.3 and 0.4, Prostate into the bladder or when, should be considered BOO may exist. Conclusion: TV and TZI can be used as supplementary methods to diagnose BOO in urodynamic examination, but can not replace urodynamic examination