Annals of the American Thoracic Society
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Clinical Trial Observational Study
Childhood-onset asthma in smokers. association between CT measures of airway size, lung function, and chronic airflow obstruction.
Asthma is associated with chronic airflow obstruction. Our goal was to assess the association of computed tomographic measures of airway wall volume and lumen volume with the FEV1 and chronic airflow obstruction in smokers with childhood-onset asthma. ⋯ In smokers with childhood-onset asthma, smaller airways are associated with reduced lung function and chronic airflow obstruction. Clinical trial registered with www.clinicaltrials.gov (NCT00608764).
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Early warning system (EWS) scores are used by hospital care teams to recognize early signs of clinical deterioration and trigger more intensive care. ⋯ Early warning system scores perform well for prediction of cardiac arrest and death within 48 hours, although the impact on health outcomes and resource utilization remains uncertain, owing to methodological limitations. Efforts to assess performance and effectiveness more rigorously will be needed as early warning system use becomes more widespread.
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Randomized Controlled Trial Multicenter Study
Effects of tiotropium on hyperinflation and treadmill exercise tolerance in mild to moderate chronic obstructive pulmonary disease.
Bronchodilator therapy represents a potentially valuable therapeutic option to increase exercise tolerance and enhance lung function in mild to moderate chronic obstructive pulmonary disease (COPD). ⋯ Resting and exercise hyperinflation were ameliorated by bronchodilator therapy with tiotropium in the overall GOLD 1 plus 2 COPD group. Exercise tolerance was enhanced in GOLD 2, but not GOLD 1, COPD. Clinical trial registered with www.clinicaltrials.gov (NCT01072396).
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Multicenter Study
H2 receptor antagonists and right ventricular morphology: the MESA right ventricle study.
H2 receptor antagonist (H2RA) use is common and may act directly on the heart through myocardial H2 receptors or indirectly through changes in pulmonary vascular resistance. ⋯ H2RA use was associated with lower RV mass and smaller RV end-diastolic volume. Additional study of histamine and H2 receptors in cardiopulmonary diseases affecting the RV may have direct clinical relevance.