RT Journal Article SR Electronic T1 PES in CAP: An acronym to identify "problematic pathogens" in community-acquired pneumonia JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP P2471 VO 40 IS Suppl 56 A1 Elena Prina A1 Miquel Ferrer A1 Eva Polverino A1 Catia Cilloniz A1 Josep Mensa A1 Encarnación Moreno A1 Erika Cuenca A1 Roberto Cosentini A1 Antoni Torres YR 2012 UL http://erj.ersjournals.com/content/40/Suppl_56/P2471.abstract AB Background: Nosocomial and Multidrug-resistant pathogens have been emerging as a cause of community-acquired infections. Recently, Rice has introduced the acronym ESKAPE for the identification of the principle pathogens responsible for nosocomial infection that frequently can “escape” the effect of antibiotic treatment. In order to translate this idea to community-acquired pneumonia (CAP), we purpose the adapted acronym PES: Pseudomonas aeruginosa, Enterobacteriaceae and Staphylococcus aureus.The aim of our study is to compare clinical characteristics and outcomes of patients with CAP/HCAP due to PES pathogens respect patients with pneumonia due to other pathogens.Methods: Among 4549 patients evaluated for CAP/HCAP, we analyzed 1470 patients which presented an etiologic diagnosis. We excluded patients with immunosuppression, neoplasm and active tuberculosis.Results: Pneumonia due to PES was identified in 136 (9%) patients (n=64 P. aeruginosa n=44 Enterobacteriaceae n=35 S. aureus). These patients were older, had more frequently received previous antibiotics and presented a reduced autonomy with higher rate of aspiration episodes (p<0.001) but not a higher number of nursing-home (p=0.125). PES pathogens were more commonly identified in patients with many comorbidities (especially neurologic and chronic respiratory disease, p<0.001). PES group had more severe pneumonia by PSI score (p<0.001), longer hospital length-of-stay and 30-days mortality (p<0.001).Conclusions: PES pathogens are responsible for CAP with high mortality. The attendant physician should be worried to empirically cover PES pathogens in patients with lower autonomy, many comorbidities and previous antibiotic treatment.