Abstract
Objective: identify the microbial aetiology of community acquired pneumonia (CAP) and analyze it´s relationship with the pneumonia severity on admission.
Methods: prospective observational study of all immunocompetent patients admitted for CAP to our Hospital between 11/2005 and 06/2018. Bacteriological diagnosis was obtained from urinary antigen test (UAT) for Legionella and S. pneumoniae, blood culture (BC), serologic test for atypical bacteria (SAB), pharyngeal swab for respiratory viruses, bronchoscopy or thoracocentesis. Pneumonia severity was estimated by PSI score.
Results: 3306 patients (1210 women), mean age:63.3 years;etiology obtained in 1150. BC performed in 2303 (69.7%), being positive in 7.8%. UAT performed in 99.5%, positive for S. pneumoniae in 23.2% and for Legionella in 3.7%. SAB performed in 257 (7.7%), 38 positive. Bronchoscopy performed in 207 patients obtaining microbial aetiology in 22. Microorganisms observed in the pleural fluid of 18 patients. Table 1: relationship between microbial diagnosis and PSI. Table 2: profitability of UAT and BC in pneumococcal pneumonia according to PSI.
Conclusions: 1. Bacteriological diagnosis was obtained in almost 35% of the patients, with pneumococcus being the microorganism most frequently identified. 2. Patients with a microbiological diagnosis had higher PSI score. 3. This correlation is due to the identification of S. pneumoniae, not being evident in the rest of microorganisms
Footnotes
Cite this article as: European Respiratory Journal 2019; 54: Suppl. 63, PA4543.
This is an ERS International Congress abstract. No full-text version is available. Further material to accompany this abstract may be available at www.ers-education.org (ERS member access only).
- Copyright ©the authors 2019