Arch Intern Med
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Multicenter Study
Effect of body mass index on diagnostic and prognostic usefulness of amino-terminal pro-brain natriuretic peptide in patients with acute dyspnea.
Amino (N)-terminal pro-brain natriuretic peptide (NT-proBNP) testing is useful for diagnostic and prognostic evaluation in patients with dyspnea. An inverse relationship between body mass index (BMI); (calculated as weight in kilograms divided by height in meters squared) and NT-proBNP concentrations has been described. ⋯ In patients with and without acute heart failure, the NT-proBNP concentrations are relatively lower in overweight and obese patients with acute dyspnea. Despite this, the NT-proBNP concentration retains its diagnostic and prognostic capacity across all BMI categories.
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Rapid influenza testing decreases antibiotic and ancillary test use in febrile children, yet its effect on the care of hospitalized adults is unexplored. We compared the clinical management of patients with influenza whose rapid antigen test result was positive (Ag+) with the management of those whose rapid antigen test result was negative or the test was not performed (Ag0). ⋯ Rapid influenza testing leads to reductions in antibiotic use in hospitalized adults. Better tools to rule out concomitant bacterial infection are needed to optimize the impact of viral testing.
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The relationship between marijuana smoking and pulmonary function or respiratory complications is poorly understood; therefore, we conducted a systematic review of the impact of marijuana smoking on pulmonary function and respiratory complications. ⋯ Short-term exposure to marijuana is associated with bronchodilation. Physiologic data were inconclusive regarding an association between long-term marijuana smoking and airflow obstruction measures. Long-term marijuana smoking is associated with increased respiratory symptoms suggestive of obstructive lung disease.