Crit Care:急性呼吸窘迫综合征的肺液生物标志物

2019-02-17 xing.T 网络

由此可见,该荟萃分析提供了肺液生物标志物的排序系统,根据它们与急性呼吸窘迫综合征的诊断或死亡率的关联。本文所示研究中生物标志物的表现可能有助于改善急性呼吸窘迫综合征的诊断和预后。

随着新技术的发展,容易获取下呼吸道标本、支气管肺泡灌洗液和其他肺液在肺病诊断中越来越重要。近日,危重病医学领域权威杂志Critical Care上发表了一篇研究文章,研究人员旨在回顾和总结与急性呼吸窘迫综合征诊断和死亡相关的肺液生物标志物。

研究人员检索了PubMed、Embase、Web of Science和Cochrane图书馆,确定了2018年1月11日之前发表的文献后,研究人员对有风险的患者急性呼吸窘迫综合征诊断的生物标志物和与疾病死亡率相关性进行了荟萃分析。从纳入的研究中,研究人员提取肺液中测量的生物标志物浓度平均值和标准差、急性呼吸窘迫综合征病因、样本量、人口统计学变量、诊断标准、死亡率和获得肺液的方案。通过平均值的比率测量效应大小,然后通过逆方差法使用其自然对数形式合成并且转化以获得合并比率和95%置信区间。

该分析总共确定了1156篇文献,其中包括49篇研究。总磷脂酶A2活性、总蛋白、白蛋白、纤溶酶原激活物抑制剂-1、晚期糖基化终产物的可溶性受体和血小板活化因子、乙酰胆碱的增加与急性呼吸窘迫综合征诊断相关最密切。至于与急性呼吸窘迫综合征死亡相关的生物标志物,死亡患者肺液中白细胞介素-1β、白细胞介素-6、白细胞介素-8、遏制肺癌-16和纤溶酶原激活物抑制剂-1显著增加。Club细胞蛋白和基质金属蛋白酶-9水平的降低与急性呼吸窘迫综合征诊断的几率增加有关,而Club细胞蛋白和白细胞介素-2水平的降低与急性呼吸窘迫综合征死亡率增加的几率相关。

由此可见,该荟萃分析提供了肺液生物标志物的排序系统,根据它们与急性呼吸窘迫综合征的诊断或死亡率的关联。本文所示研究中生物标志物的表现可能有助于改善急性呼吸窘迫综合征的诊断和预后。

原始出处:

Yishan Wang.et al.Lung fluid biomarkers for acute respiratory distress syndrome: a systematic review and meta-analysis.Critical Care.2019.https://doi.org/10.1186/s13054-019-2336-6

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50年前,Ashbaugh及其同事(Ashaugh所在团队)对12例感染或创伤患者进行研究,这些患者感染或遭受创伤后会出现呼吸急促、难治性低氧血症以及胸片显示弥漫性阴影等现象。在7例死亡的患者中,有6例患者出现了肺泡腔内被覆明显的透明膜。在此之前,肺泡内透明膜被认为是新生儿呼吸窘迫综合征的特异体征。因此,成人(后改为急性)呼吸窘迫综合征(ARDS)这个术语孕育而出。

Lancet respir med:中重度急性呼吸窘迫综合征的新疗法——间充质干细胞注射疗法

骨髓来源的间充质干细胞(MSCs)疗法在急性呼吸窘迫综合征(ARDS)的预临床模型中显现出治疗潜能。在重症ARDS患者中应用MSCs的安全性尚不明确。现研究人员对MSCs用于中重度ARDS患者的安全性进行评估。研究人员开展一前瞻性的双盲多中心随机试验,在USA的5个大学医疗中心招募辅助呼吸的中重度ARDS患者(氧分压/激发氧<27kPa、呼气末正压[PEEP]≥8cmH2O)。按2:1将患者随机分

Crit Care:胸部X线与肺部超声鉴别急性呼吸窘迫综合征的性能比较

由此可见,为了使用柏林定义识别ARDS,胸部X线和肺部超声检查与死亡率同等相关。使用肺部超声的柏林定义有助于识别死亡风险较高的患者,即使这些患者使用胸部X线检查不符合传统的柏林定义。然而,当胸部影像学检查结果不同时,患者的适度重叠检查提示胸部X线和肺部超声检查应该互补而不是互换使用。