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[Diagnostic methods and treatment of community-acquired pneumonia in Spain: NACE study].

BACKGROUND
Community-acquired pneumonia (CAP) is one of the most frequent infectious disease conditions. With the aim of knowing the diagnostic and therapeutic strategies of CAP in Spanish hospitals we performed a prospective, observational and multicenter study.


PATIENTS AND METHOD
Observational study of 468 patients with CAP consecutively evaluated in 21 Spanish hospitals. Clinical, diagnostic, therapeutic and evolutive variables were recorded.


RESULTS
We included 468 patients with a mean age of 63 (18) years; 75% of them had some comorbidity. 380 (81%) patients required hospitalization in a conventional ward while 19 (4%) were admitted in an Intensive Care Unit (ICU). 69 patients (15%) required ICU admission. During the first 24 h of admission, biochemical determinations were performed in 98% of cases, blood gas measurements in 88%, blood cultures in 265 (58%), sputum cultures in 149 (41%) and an invasive diagnostic technique was carried out in 17 cases. In 62 cases (14%), a microbiological diagnosis was achieved. Streptococcus pneumoniae (28 cases) was the most frequent isolate followed by Legionella pneumophila (6 cases). Clarithromycin was the most frequent antibiotic prescribed (38%), either as monotherapy (28) or in combination (148), followed by amoxicillin-clavulanate (124 cases). Nine percent of patients were considered non-responders to initial empirical antibiotic tretament. Overall mortality was 6% (25%) and it was significanty higher in non-responders.


CONCLUSIONS
In most patients with CAP admitted in Spanish hospitals, a systematic diagnostic approach is lacking. There is an important variability in the administration of antimicrobials, the association of a betalactam plus clarithromycin being the most frequent strategy. Overall mortality is low and significantly higher in those patients with a lack of response to initial antibiotic treatment.