Chest:肺动脉高压联合治疗试验长时间随访是在做无用功?

2018-06-20 徐钰琦 环球医学

2018年5月,发表于《Chest》上的一项系统评价,考察了肺动脉高压(PAH)联合治疗试验中持续时间与风险降低之间的相关性。

2018年5月,发表于《Chest》上的一项系统评价,考察了肺动脉高压(PAH)联合治疗试验中持续时间与风险降低之间的相关性。

背景:相对风险(RR)和需要治疗的数量(NNT)通常是时间依赖性的测量指标。研究者进行了一项系统评价和meta分析,来比较PAH联合治疗(CT)的特异性疗法vs单一治疗(MT),试验持续时间是否影响随机对照试验(RCTs)恶化的相对和绝对风险。

方法:研究者在MEDLINE、Embase和Cochrane图书馆(1990年1月至2016年9月)检索了评估PAH中CT vs MT的RCTs。主要结局是临床恶化风险。研究者使用混合效应的加权meta回归,评估了试验持续时间是否与RR和NNT相关。也通过长期事件驱动试验的数据评估了NNT随时间的变化。

结果:纳入了15项研究,共3801名患者。临床恶化的RR与试验持续时间正相关(R2=0.67,P=0.0002),而NNT则不是(平均NNT:7;R2=0.02;P=0.65)。在长期事件驱动试验中,平均NNT逐渐下降,直至52周随访,此后稳定。相反,平均RR从16周时大约0.40逐渐增加到104周时大约0.68。

结论:在比较CT和MT治疗PAH超过6至12个月的临床试验中,临床恶化的绝对风险降低相对稳定。这些结果质疑了在PAH中进行非常长期CT试验的必要性。

原始出处

Lajoie AC, Guay CA, Lega JC, et al. Trial Duration and Risk Reduction in Combination Therapy Trials for Pulmonary Arterial Hypertension: A Systematic Review. Chest. 2018 May;153(5):1142-1152. doi: 10.1016/j.chest.2017.11.014.

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    2018-09-23 Smile2680
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    2018-06-20 明天jing

    肺动脉高压表面是罕见病,事实上临床上并不少见,治疗药物虽然有一些,但是整体仍然不理解,可能未来需要采用综合治疗措施。

    0

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