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目的 :分析先天性无肛患儿术后肛管内压力变化及对患儿临床排便功能的影响。方法 :采用向量测压技术对 45例先天性无肛术后患儿及 5 5例正常儿进行直肠肛管测压 ,所有数据采用 t检验进行统计学分析。结果 :患儿各组肛管内最大压力及向量容积均明显低于正常儿 (P均 <0 .0 1)。优、良两组两项指标均明显高于不良组 (P均<0 .0 1)。优组向量容积明显高于良组 (P <0 .0 1) ;患儿各组均检测出肛管内存有局部压力缺损 ,其百分率优组最低 ,不良组最高。结论 :无肛患儿术后肛管内不仅最大压力下降 ,且大部分患儿存有压力缺损。两者所致的肛管向量容积降低可能是患儿术后出现排便障碍的重要原因。
Objective: To analyze the change of anal canal pressure and its effect on clinical defecation in children with congenital absence of anus. Methods: 45 cases of congenital anorectal anorectomy and 55 normal children were enrolled in rectal anal canal by vector manometry. All data were analyzed by t-test. Results: The maximal pressure and volume of the anal canal in each group were significantly lower than those in normal children (all P <0.01). Excellent, good two groups of two indicators were significantly higher than the poor group (P <0.01). The vector volume of the excellent group was significantly higher than that of the good group (P <0.01). Local pressure loss in the anal canal was detected in all groups, with the lowest percentage of excellent group and the highest of bad group. Conclusion: There is not only the maximum pressure drop in the anal canal without anus, but most of the children have pressure loss. The decrease of volume of the anal canal caused by both may be the important reason of postoperative defecation disorder in children.