• I Martin-Loeches, T Lisboa, A Rodriguez, C Putensen, D Annane, J Garnacho-Montero, M I Restrepo, and J Rello.
• Critical Care Department, Mater Misericordiae University Hospital, Dublin, Ireland.
• Intensive Care Med. 2010 Apr 1;36(4):612-20.

ObjectiveTo assess the effect on survival of macrolides or fluoroquinolones in intubated patients admitted to the intensive care unit (ICU) with severe community-acquired pneumonia (severe CAP).MethodsProspective, observational cohort, multicenter study conducted in 27 ICUs of 9 European countries. Two hundred eighteen consecutive patients requiring invasive mechanical ventilation for an admission diagnosis of CAP were recruited.ResultsSevere sepsis and septic shock were present in 165 (75.7%) patients. Microbiological documentation was obtained in 102 (46.8%) patients. ICU mortality was 37.6% (n = 82). Non-survivors were older (58.6 +/- 16.1 vs. 63.4 +/- 16.7 years, P < 0.05) and presented a higher score on the simplified Acute Physiology Score II at admission (45.6 +/- 15.4 vs. 50.8 +/- 17.5, P < 0.05). Monotherapy was given in 43 (19.7%) and combination therapy in 175 (80.3%) patients. Empirical antibiotic therapy was in accordance with the 2007 Infectious Diseases Society of America (IDSA)/American Thoracic Society (ATS) guidelines in 100 (45.9%) patients (macrolides in 46 patients and fluoroquinolones in 54). In this cohort, a Cox regression analysis adjusted by severity identified that macrolide use was associated with lower ICU mortality (hazard ratio, HR 0.48, confidence intervals, 95% CI 0.23-0.97, P = 0.04) when compared to the use of fluoroquinolones. When more severe patients presenting severe sepsis and septic shock were analyzed (n = 92), similar results were obtained (HR 0.44, 95% CI 0.20-0.95, P = 0.03).ConclusionsPatients with severe community-acquired pneumonia had a low adherence with the 2007 IDSA/ATS guidelines. Combination therapy with macrolides should be preferred in intubated patients with severe CAP.

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