PMID: 9445580Jan 31, 1998Paper

Moraxella (Branhamella) catarrhalis: its isolation in the respiratory secretions of adult patients

Anales de medicina interna : organo oficial de la Sociedad Española de Medicina Interna
A Ferrer MarcellésT González Fuente

Abstract

We have designed a retrospective study in order to know the clinical significance of the isolation of Moraxella (Branhamella) catarrhalis (MC) in respiratory specimens of adult hospitalized patients. We performed a Gram stain and culture on blood-agar, MacConkey media and quantitative culture in chocolate-agar to all respiratory samples. In patients with a clinical diagnosis of pneumonia BCYE-alpha was added. During 2 years (1992-1993) MC was isolated in respiratory specimens from 52 patients. We revised the clinical history of all these patients. MC was isolated in 60 respiratory specimens (sputum and/or tracheobronchial aspirates) from 52 patients. The Gram stain showed gram-negative cocci in 77% and gram-positive cocci in 17% of the cases. MC grew in pure culture in 28 specimens (46.6%). In 23% of cases MC was isolated with Streptococcus pneumoniae and in 21% with Haemophilus influenzae. Fifty-two stocks (86.6%) produced beta-lactamase. Twelve patients had a clinical diagnosis of pneumonia, 8 of them had an underlying chronic respiratory disease. Other 24 patients with an underlying chronic respiratory disease had a bronchial infection as a cause of exacerbation of their respiratory disease. Seven patients without an underly...Continue Reading

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