Elastance May Determine the Neuromuscular Blockade Effect on Mortality in Acute Respiratory Distress Syndrome

医学 神经肌肉阻滞 急性呼吸窘迫 呼吸窘迫 封锁 弹性 呼吸系统 急性呼吸窘迫综合征 重症监护医学 麻醉 内科学 物理医学与康复 受体
作者
Ann A. Zalucky,José Dianti,Lucile Neyton,Pratik Sinha,Kathleen D. Liu,M.A. Matthay,Bruce Thompson,Ewan C. Goligher,Carolyn S. Calfee
出处
期刊:American Journal of Respiratory and Critical Care Medicine [American Thoracic Society]
标识
DOI:10.1164/rccm.202406-1231oc
摘要

Patients with acute respiratory distress syndrome (ARDS) have a reduction in functional lung volume resulting in increased respiratory system elastance (Ers); however, the extent of this increase varies by patient. Patients with high Ers are at risk of excess lung-distending pressures and may derive greater clinical benefit from neuromuscular blockade (NMB). To evaluate whether the effect of early NMB administration on mortality varies according to baseline physiological and biological biomarkers of lung injury, including Ers. We conducted a secondary analysis of the ROSE trial. Bayesian logistic regression modelling was employed to estimate the posterior probability of NMB effect moderation by baseline Ers, ventilatory ratio, and select ARDS plasma biomarkers on 90-day mortality. The probability of mortality benefit with NMB increased substantially with higher baseline Ers (posterior probability of interaction, 92%; interaction odds ratio 0.76, 90% credible interval (CrI) 0.59-0.99). In patients with Ers ≥2cm H2O/(mL/kg), the posterior probability of benefit was 96% (median absolute risk reduction 9%, 90% CrI 0.5-17.9%). The effect of NMB did not vary meaningfully according to ventilatory ratio (posterior probability of interaction, 62%) or baseline plasma levels of receptor for advanced glycation end-products, tumor necrosis factor receptor-1, interleukin-6 or -8 (posterior probabilities of interaction: 12%, 18%, 44% and 22% respectively). These findings suggest that the mortality benefit of NMB varies with baseline Ers. High Ers may represent a physiological phenotype of ARDS. Future prospective testing to confirm benefit in this potentially treatment-responsive group is needed.
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