Lancet子刊:经鼻高流量氧疗是否能降低免疫功能低下急性呼吸衰竭患者的死亡率?

2022-03-30 小文子 MedSci原创

ICU免疫功能低下的急性呼吸衰竭患者,单独使用HFNO与NIV交替HFNO的死亡率没有差异。

对于ICU免疫功能低下的急性呼吸衰竭患者使用无创通气(NIV),可能对危重患者产生危害。经鼻高流量氧疗(HFNO)可能是降低死亡率的一种方法。Lancet Respir Med杂志的一项研究探索了与HFNO和NIV交替使用相比,单独使用HFNO是否能降低28天死亡率。

FLORALI-IM是一项在29个ICU(法国28个,意大利1个)进行的多中心、开放标签、随机临床试验。免疫功能低下的急性呼吸衰竭成人患者,定义为呼吸频率≥25次/min,PaO2/FiO2≤300 mmHg,随机分配患者(1:1)至单独HFNO组(单独HFNO组)或NIV与HFNO交替组(NIV组)。主要排除标准为重度高碳酸血症、可能从NIV中获益的患者(即慢性肺部疾病、心源性肺水肿或术后患者)、重度休克、意识障碍(格拉斯哥昏迷评分≤12)、紧急需要插管,且NIV禁忌症。单独HFNO组,患者持续接受HFNO治疗,气体流速为60 L/min或最高耐受量。NIV组中,首次接受NIV治疗至少4h,然后每天最短持续治疗时间为12h,患者使用专用呼吸机,目标潮气量低于预测体重的8mL/kg,呼气末正压水平至少为8cm H2O。与单纯HFNO组相同,NIV治疗间隔给予HFNO。主要结局是28天死亡率,并在意向治疗人群中进行评估。次要结局为ICU、住院、90天和180天的死亡率、28天插管率、ICU住院时间、28天无呼吸机天数、28天未使用氧疗天数,以及氧疗的有效性和耐受性。

2017年1月21日至2019年3月4日期间,在497例符合条件的患者中,300例被随机分配,1例患者撤回知情同意,剩余299例患者纳入意向治疗分析(154例分配至HFNO组,145例分配至NIV组)。HFNO组28天死亡率为36%(95%CI, 29.2~44.2; 56/154例),NIV组为35%(95%CI, 27.9~43.2; 51/145例)(绝对差异1.2%[95%CI, -9.6~11.9]; p=0.83)。HFNO开始治疗时的不适感大于NIV组(视觉模拟量表 -4 mm[IQR–18~4] vs 0 mm[–16~17];p = 0.040),组间其他预先设定的次要结局均无差异。

结果表明,ICU免疫功能低下的急性呼吸衰竭患者,单独使用HFNO与NIV交替HFNO的死亡率没有差异。

原文出处:

Rémi Coudroy, Jean-Pierre Frat, et al, High-flow nasal oxygen alone or alternating with non-invasive ventilation in critically ill immunocompromised patients with acute respiratory failure: a randomised controlled trial, Lancet Respir Med 2022, https://doi.org/10.1016/S2213-2600(22)00096-0.

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    2022-05-16 howi
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    2022-04-01 走,走走

    免疫功能低下的急性呼吸衰竭成人患者,定义为呼吸频率≥25次/min,PaO2/FiO2≤300 mmHg

    0

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    2022-03-30 柠lemon檬

    ICU免疫功能低下的急性呼吸衰竭患者,单独使用HFNO与NIV交替HFNO的死亡率没有差异。

    0

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    2022-03-30 rgjl
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