作者观察一例于1971年诊断为阴道毛滴虫性阴道炎患者,用灭滴灵治疗几个疗程后,仍多次复查发现虫体。由于复发,于1980年2月5日在监视下予以治疗,并测定血浆中药物浓度。灭滴灵的剂量:第1、2天,每日3次,每次口服0.2g,血浆中的药物浓度为4.0～8.8mg/l,第3天至第12天,每日2次,每次口服1g,血浆中的药物浓度达16～26mg/l,最后5天还附加阴道局部用药,每 The authors observed a case of vaginal trichomonas vaginitis diagnosed in 1971, treated with metronidazole a few courses, still repeatedly found the worm body. Due to relapse, on February 5, 1980, treatment was monitored and the plasma drug concentration was measured. The dosage of metronidazole: the first and second days, 3 times a day, each oral 0.2g, plasma drug concentration of 4.0 ~ 8.8mg / l, 3 days to 12 days, 2 times a day, each Oral 1g, plasma concentration of 16 ~ 26mg / l, the last 5 days also attached to vaginal topical treatment, each