目的分析便秘的原因，并评价结肠运输实验与排粪造影对诊断便秘的价值。
Objective To analyse the cause of constipation and evaluate the diagnostic value of colonic transit test and defecography for constipation diagnosis.
运用结肠运输实验观察各年龄组结肠运输情况，采用放免法测定其餐前后血中nt的浓度。
Colon transit of every group was observed by colonic transit test Plasma nt concentrations were observed by radioimmunoassy (RIA).
运用结肠运输实验观察各年龄组结肠运输情况，采用放免法测定其餐前后血中nt的浓度。
Colon transit of every group was observed by colonic transit test Plasma nt concentrations were observed by radioimmunoassy (RIA).
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