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设双氢青蒿素３天疗程２４０ｍｇ、５天疗程３６０ｍｇ和７天疗程４８０ｍｇ三组，各治疗恶性疟３０例，进行疗效比较。结果表明，三组所治疗的病人平均退热时间和原虫转的时间相似，原虫复燃率则７天疗程组（无复燃）和５天疗程组（５．６％）显著低于３天疗程组（５２．０％）。三组均未发现临床不良反应。７例患者进行杀虫速度观察，表明双氢青蒿素清除９５％原虫时间为１６ｈ，推荐７天疗程４８０ｍｇ为临床适宜治疗量。
Set dihydroartemisinin three days course 240mg, five days course 360mg and seven days course 480mg three groups, the treatment of 30 cases of falciparum malaria, the curative effect comparison. The results showed that the average duration of fever in the three treatment groups was similar to that of the protozoal, and the rates of protozoal relapse were significantly lower in the 7-day treatment group (no resurgence) and the 5-day treatment group (5.6%) than in the 3 days Treatment group (52.0%). Three groups were found no clinical adverse reactions. Seven patients were observed for insecticidal speed, indicating that dihydroartemisinin clearance of 95% protozoa for 16h, recommended 7 days course of 480mg for the appropriate clinical treatment.