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The impact of beta2-agonists (B2As) on heart failure (HF) remains controversial. This study aimed to investigate whether inhaled B2As increased in-hospital mortality in ICU patients with HF.The Multiparameter Intelligent Monitoring in Intensive Care III database was initially searched to identify adult patients (≥ 18 years old) with HF in ICU. Then, patients using or not using inhaled B2As were matched using propensity score matching on a 1:1 basis to control for baseline confounders. In-hospital mortality was compared between the two groups, and logistic regression analysis was performed to assess the association between B2As and in-hospital mortality.The initial search retrieved 2345 eligible patients with HF from the database. After propensity score matching, 705 pairs of patients were included in the final analysis. Patients using B2As had markedly higher in-hospital mortality than those not using B2As (4.68% versus 2.27%; P = 0.013). In the multivariate logistic regression analysis, B2A use (odd ratios (OR), 2.471; 95% confidence interval (CI), 1.289-4.734; P = 0.006), stroke (OR, 4.581; 95% CI, 1.621-12.948; P = 0.004), and simplified acute physiology score II (SAPS-II) scores (OR, 1.090; 95% CI, 1.064-1.116; P &lt; 0.001) were significantly associated with increased risk of in-hospital mortality, whereas renin angiotensin system inhibitor use (OR, 0.396; 95% CI, 0.202-0.778; P = 0.007) was significantly associated with decreased risk of in-hospital mortality. Subgroup analysis further indicated that the association between B2A use and mortality was significant only in patients with HF without chronic pulmonary disease (OR, 2.427; 95% CI, 1.351-4.362; P = 0.003), but not in those with chronic pulmonary disease (OR, 2.094; 95% CI, 0.582-7.537; P = 0.258).In ICU patients with HF but without chronic pulmonary disease, the use of inhaled B2As is associated with increased in-hospital mortality.

Inhaled Beta2-Agonists Increase In-Hospital Mortality in ICU Patients with Heart Failure