回盲瓣的超声检查及其临床意义

目的　探讨超声对回盲瓣的显示率、显示方法、声像图特征及其临床意义。方法　 92例X线和(或 )肠镜检查正常者行灌肠后回盲瓣超声检查 ,另 78例肠梗阻患者作对照研究。探头置右下腹 ,扫查切面与腋前线夹角为 2 0°～ 5 0° ,与水平面夹角 45°。结果　回盲瓣呈“八”字形 ;显示清晰 (Ⅱ度 ) 73 .9% ,部分显示 (Ⅰ度 )16.3 % ,未显示 ( 0度 ) 9.8% ;上瓣长径正常值为 ( 1.95± 0 .42 )cm ,下瓣长径 ( 1.3 9± 0 .3 5 )cm ,瓣叶厚度 ( 4 .79±1.2 9)mm。肠梗阻 78例中 61例为回顾性分析 ,大小肠梗阻部位诊断符合率为 85 .2 % ,根据回盲瓣显示对另 17例肠梗阻作前瞻性研究 ,梗阻部位均判断正确。结论　超声能准确识别回盲瓣 ,对梗阻部位及病因诊断均有较高的临床应用价值。

Demonstration and measurement of ileocecai valve by ultrasonography and its clinical significance

Objective To investigate the visualization rate,exarning methods,sonographical of iIeocecal valve,and evaluate its clinical significance.Methods Ileoeecal valves were examined in 92 CaSes with hydrosonography,the other 78 cases with bowel obstruction were examined with traditional body surface ultrasound.Probe was positioned in right lower abdomen,the angle between section and anterior axillary line WaS 20.～50.,the angle between section and horizontal plane Was about 45.Results The display rate of H,I and 0 degree were 73.9%,16.3%,9.8%.respectively The lenth of the upper valve and the lower valve were(1.95±0.42)cm,(1.39±0.35)cm,respectivelv,dlagnostic accordance rate of differentiating colonic obstruction from small obstruction Was 85.2%,17 of 78 cases were studied prospectiVely on the basis of ileocecat valve visualization,the obstruction level of 17 cases were Dredicted correctly.Conclusion Ultrasonography is valuable tO predict the level and cause of bowel obstruction.