• Marc Miravitlles, Cayo García-Polo, Adolfo Domenech, Gustavo Villegas, Francisco Conget, and Cristian de la Roza.
• Pneumology Department, Hospital Universitari Vall d'Hebron, P. Vall d'Hebron 119-129, 08035, Barcelona, Spain, mmiravitlles@vhebron.net.
• Lung. 2013 Oct 1;191(5):523-30.

BackgroundExacerbations are a major cause of disability, hospital admissions, and increased healthcare costs in patients with chronic obstructive pulmonary disease (COPD). This study investigated the clinical outcomes of outpatients with moderate to severe exacerbated COPD and their related costs.MethodsAn observational study on the outcomes of ambulatory exacerbations of COPD was conducted. The course of the exacerbation was evaluated at a follow-up visit at 4 weeks. A cost analysis that encompassed the use of healthcare resources for treatment of the exacerbation was performed.ResultsA total of 260 patients were included, with a mean age of 68.3 years and a mean FEV1 (% predicted) of 58.9 %. Twenty-two percent of patients had significant cardiovascular comorbidity. The most frequently prescribed antibiotics were moxifloxacin in 137 cases and amoxicillin-clavulanate in 50 cases. The rate of failure at 4 weeks was 12.5 %, with no differences between the two most prescribed antibiotics; however, patients treated with moxifloxacin had symptoms for 1.9 fewer days (P = 0.01). The mean cost of the exacerbation was 344.96 (95 % CI: 48.55-641.78), with 9.6 % of the costs for drugs and 72.9 % for hospital care of patients for whom treatment had failed.ConclusionsAntibiotic treatment of our population was in compliance with local guidelines. The rate of failure observed in our study was lower than that reported in previous studies; however, the small percentage of patients that required hospital attention generated almost two-thirds of the total costs of the exacerbations.

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