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大承气汤（ＤＴ）经十二指肠给药对胃运动表现出先抑制后兴奋的作用特点，给药后１～３小时，胃运动（蠕动）呈逐渐加强趋势，４小时后作用逐渐减弱．可持续６～８小时．
Dachengqi Decoction (DT) was shown to have a first-inhibitory and post-excitatory effect on gastric motility after duodenal administration. Gastric exercise (creep) gradually increased after 1 to 3 hours of administration, and gradually decreased after 4 hours. . Sustainable 6 to 8 hours.