Medicina (Buenos Aires)
versión On-line ISSN 1669-9106
GENTILE, J. H.; SPARO, M. D.; MERCAPIDE, M. E. y LUNA, C. M. Adult bacteremic pneumococcal pneumonia acquired in the community: A prospective study on 101 patients. Medicina (B. Aires) [online]. 2003, vol.63, n.1, pp. 9-14. ISSN 1669-9106.
Our objective was to describe incidence, clinical, radiographic and microbiological features of bacteremic pneumococcal pneumonia (BPP) in our environment. A total of 101 patients (7 were treated as outpatients), older than 18 years of age suffering BPP were prospectively evaluated. The incidence was 2.8 cases per 1000 admissions, 50 were males, mean age was 59.9 years (19-97), mortality was 11.8%. Eighty three percent of fatalities occurred within 3 days of admission. Mortality rate increased with advancing age. Fever, cough and chest pain were the commonest presenting symptoms and 44% of patients had extrapulmonary manifestations. Cigarette smoking, chronic obstructive lung disease, alcoholism and congestive heart failure (CHF) were the commonest underlying conditions. CHF was more frequent in non-survivors (p = 0.002). A lobar pattern at chest radiograph predominated in survivors and a diffuse pattern in non-survivors (p = 0.007). Pleural effusion (20.7%), empyema (7.9%) and respiratory failure (7.9%) were the main complications. Underlying diseases were present in 100% of non-survivors (p = 0.03). Ninety four percent of patients were treated with beta-lactam antibiotics. Streptococcus pneumoniae was isolated from sputum in 6 cases. Three out of 101 S. pneumoniae isolates recovered from blood samples (one from each patient) presented organisms resistant to penicillin. We observed an incidence of BPP that is similar to the observed in other countries. There are clinical and radiographic differences between survivors and non-survivors. Penicillin-resistant S. pneumoniae is still an unusual problem in our area.
Palabras llave : Bacteremic pneumococcal pneumonia; Community acquired pneumonia; Streptococcus pneumoniae.