目的 采用超声观察幽门组织,探讨其诊断先天性肥厚性幽门狭窄(CHPS)的价值.资料与方法 回顾性分析2006-2015年广州市第一人民医院新生儿科经超声检查诊断的65例CHPS患儿,通过多普勒超声对CHPS组及50例对照组婴儿进行检查,观察其血流分布特点及血流分级,进行多普勒频谱分析,并观察造影剂通过幽门管的情况.结果 CHPS组肌层厚度为(4.85±0.82)mm,黏膜层厚度(1.24±0.18)mm,幽门管长径(18.53±0.91)mm,幽门管内径(1.95±0.35)mm,与对照组比较,差异有统计学意义(P<0.01);两组间肌层及黏膜层血流分级均有统计学意义(t=13.33、18.77,均P<0.01).CHPS组肌层血流速度为(16.96±0.91)cm/s,阻力指数为0.68±0.33,彩色多普勒超声下幽门管内径为(1.98±0.33)mm.结论 多普勒超声检查可掌握幽门组织的血流分布和血流分级,了解造影剂通过幽门情况,综合血流速度及阻力指数等指标可评估幽门狭窄的程度,为临床选择治疗方法提供客观依据.%Purpose To explore the value of Doppler ultrasound in the diagnosis of congenital hypertrophic pyloric stenosis (CHPS) by observing pylorus. Materials and Methods Sixyt-five children with CHPS diagnosed by ultrasound in Neonatology Department of Guangzhou First People's Hospital from 2006 to 2015 were retrospectively analyzed. CHPS group and 50 infants in control group were examined by Doppler ultrasound to observe the features of blood flow distribution and blood flow grading, and Doppler spectrum analysis was performed to observe contrast agent passing through pyloric canal. Results The difference of the thickness of muscular layer and mucous layer, and that of the long diameter and inner diameter of pyloric canal in CHPS group and control group all suggested marked statistical significance (P<0.01); the blood flow grading in muscular layer and mucous layer between the two groups showed statistical significance (t=13.33 and 18.77, all P<0.01). The blood flow velocity in muscular layer of CHPS group was (16.96±0.91) cm/s, resistance index (RI) 0.68±0.33, inner diameter of pyloric canal (1.98±0.33) mm. Conclusion Doppler ultrasound enables us to grasp the distribution and grading of blood flow of pylorus as well as the condition of contrast agent passing through pyloric canal, in which way the degree of pyloric stenosis can be evaluated by combining indexes such as Vmax and RI, and an objective basis for clinical choice of treatment can be provided, possessing high application value.
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