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目的：探讨β2受体激动剂羟苄羟麻黄碱对治疗早产的效果。方法：对108例先兆早产及早产患者分为两组，分别静脉使用羟苄羟麻黄碱或硫酸镁抑制宫缩。结果：羟苄羟麻黄碱抑制宫缩显效时间只需2．91±0．55小时，延长妊娠天数达26．56±20．56天，均明显优于硫酸镁治疗（P＜0．01）。未发现严重的副作用发生。结论：羟苄羟麻黄碱是治疗早产的安全而有效的药物。
Objective: To investigate the effect of β2 receptor agonist oxybenzone on preterm labor. Methods: 108 cases of threatened preterm labor and premature labor were divided into two groups, respectively, intravenous hydroxybenzalpha or magnesium sulfate inhibit contractions. Results: The effective time of hydroxybenzaldehyde in inhibiting uterine contractions was 2.91 ± 0.55 hours and the number of days of pregnancy was 26.56 ± 20.56 days, which were significantly better than those of magnesium sulfate treatment (P <0.01) . No serious side effects were found. Conclusions: Hydroxybenzydrine is a safe and effective drug for the treatment of preterm labor.