彩色多普勒超声对33例胡桃夹现象诊断分析

Diagnosis of 33 Cases of Nutcracker Phenomenon by Color Doppler Ultrasound

目的 探索采用彩色多普勒B超对胡桃夹现象的诊断特点。方法 对33例病人观察组中,23例为发作性血尿,9例为体位性蛋白尿,1例为精索静脉曲张症;另有30例同龄健康人作对照组。由美国阿帕奇RX-400型彩色多普勒超声诊断仪检测。结果 观察组33例病例的彩色多普勒B超检查,左肾静脉狭窄前扩张部位近端内径较狭窄部位宽2倍以上,直立位比平卧位时更为明显。肾动脉测量结果:左侧肾动脉内径6.90±0.52mm比右侧肾动脉内径7.15±0.64mm狭窄(t=2.3,P<0.05),差异有显著性意义。结论 对不明原因的血尿,体位性蛋白尿,采用彩色多普勒B超检测左肾静脉情况,直立位比平卧位时更能提高诊断准确性。

Objective To study the diagnostic characteristics of color Doppler ultrasound in diagnosis of nutcracker phenomenon. Methods In the observation group(33 cases), 23 cases were paroxysmal hematuria, 9 cases were positional albuminuria and one was varicocele. The control group was 30 cases. All patients were examined by Apachi RX-400 color Doppler ultrasound diagnosis instrument. Results In the observation group (33 cases), all were examined by color Doppler ultrasound. The internal diameter of dilated proximal portion of left renal vein was two times more than the constricted position. The vertical position was more obvious than the reclining position. The measurement results of renal artery: the internal diameter of left renal artery (6.90±0.52mm) was narrower than right renal artery(7.15±0.64mm). The differences were significant(t = 2.3, P<0.05). Conclusion The detection of left renal veins by color Doppler ultrasound for unexplained hematuria and positional albuminuria could improve the diagnostic accuracy. The vertical position is more obvious than the reclining position.