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对17项已发表的心肌梗死中β受体阻滞剂试验进行了审查,关注报告治疗效果的95%置信区间。所有试验均为前瞻性、随机且(除静脉注射治疗外)安慰剂对照。为合并结果分析,将试验任意分为起痛后“早期”或“晚期”给予治疗。所有试验结果均支持约20%以上的治疗效果,但在使用晚期β受体阻滞治疗的试验中益处更明显。晚期治疗试验的合并结果显示死亡率降低26%,置信区间为17%-35%,而早期治疗试验显示正效应为8%。结果证实了心肌梗死后晚期使用β受体阻滞剂可降低死亡率,但早期干预的效果尚待确定。
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N. Baber
John A. Lewis
BMJ
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Baber等人(Sat,)研究了此问题。
www.synapsesocial.com/papers/6a09773687ad1657d25159de — DOI: https://doi.org/10.1136/bmj.284.6331.1749
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