Efficacy of amoxycillin versus amoxycillin/clavulanate in acute exacerbations of chronic pulmonary obstructive disease in primary care
Carl Llor1, Silvia Hernández1, Anna Ribas2, Carmen Álvarez3, Josep Maria Cots4, Carolina Bayona5, Isabel González6, Marc Miravitlles7, BRAMOX Study Group
1Primary Care Centre Jaume I, Tarragona, Spain; 2Primary Care Centre Santa Eugènia de Berga, Spain; 3Primary Care Centre Manlleu, Spain; 4Primary Care Centre La Marina, Barcelona, Spain; 5Primary Care Centre Valls, Spain; 6Primary Care Centre Maragall, Barcelona, Spain; 7Pneumology Department. Institut Clínic del Tòrax (IDIBAPS), Hospital Clínic, Barcelona, CIBER de Enfermedades Respiratorias (CIBERES), Spain
Background: Amoxycillin/clavulanate is considered first-line treatment for ambulatory exacerbations of COPD. However, narrow-spectrum antibiotics may be as useful for mild to moderate patients.
Objective: To compare the clinical efficacy of amoxycillin versus amoxicyllin/clavulanate in exacerbations of COPD in primary care.
Methods: A randomized, double-blind, noninferiority clinical trial was carried out in eight primary care centers in Catalonia, Spain. Spirometrically-diagnosed patients older than 40 years with COPD, without criteria of hospitalization and Anthonisen’s types I or II exacerbations were included. The main outcome was clinical cure at the end of treatment (EOT) visit on day 10.
Results: A total of 137 patients were enrolled in the study (68 assigned to amoxycillin and 69 to amoxycillin/clavulanate). The mean forced expiratory flow in one second was 61.6% and the mean age was 71.4 years. At EOT, 92.8% of patients in the amoxycillin/clavulanate and 90.9% in the amoxycillin group were considered clinically cured, a statistically non-significant difference. Adverse effects were observed in 11 subjects, 3 in the amoxycillin group and 8 in the amoxycillin/clavulanate group, 2 of whom required a change in treatment.
Conclusions: Amoxycillin was at least as effective clinically and as safe as amoxycilin/clavulanate in the treatment of acute exacerbations of COPD in mild to moderate patients in primary care.
Keywords: exacerbation, chronic obstructive pulmonary disease, randomised controlled trial, amoxycillin, primary care, amoxycillin/clavulanate
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