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目的探讨前列腺动脉血流阻力指数(RI)与前列腺增生伴下尿路梗阻患者的梗阻程度间是否存在相关性。方法对24例有下尿路梗阻症状的前列腺增生患者行经直肠彩色多普勒超声检查,检测前列腺被膜支动脉、尿道支动脉血流阻力指数(RI)及最大尿流率、国际前列腺症状评分(international prostate symptom score,IPSS)、前列腺体积、移行区体积和指数,对其相关性进行分析。结果前列腺被膜支动脉血流RI与前列腺体积及移行区体积和指数、IPSS均呈正相关(P<0.05),与最大尿流率呈负相关(P<0.05);而尿道支动脉血流RI与上述参数无明显相关性(P>0.05)。结论前列腺被膜支动脉血流RI可反映前列腺增生患者下尿路梗阻严重程度。
Objective To investigate the relationship between the Prostate Artery Resistance Index (RI) and the degree of obstruction in patients with prostatic hyperplasia and lower urinary tract obstruction. Methods Twenty-four patients with benign prostatic hyperplasia with lower urinary tract obstruction underwent transrectal color Doppler ultrasonography to detect the RI and maximal uroflow rate of the adventitia, the prostatic urethra, the international prostate symptom score ( international prostate symptom score, IPSS), prostate volume, transitional volume and index, and their correlations were analyzed. Results The RI of prostatic tunic shunt artery was positively correlated with the volume and index of prostate gland, IPSS and IPSS (P <0.05), but negatively correlated with the maximal uroflow rate (P <0.05) No significant correlation between the above parameters (P> 0.05). Conclusion Prostate branch artery blood flow RI may reflect the severity of lower urinary tract obstruction in patients with benign prostatic hyperplasia.