OBJECTIVE: To evaluate the prevalence and the prognostic value of thrombocytopenia in patients admitted to ICU for severe community-acquired pneumonia. METHODS: Multicentre observational study was conducted in 7 ICUs in the north of France over a 19-year period (1987-2005). The primary outcome measure was the ICU mortality. RESULTS: Eight hundred and twenty-two patients were studied. A platelet count < 150x10(9)/L was observed at ICU admission in 202 (25%) patients. Admission platelet count was between 101 and 149x10(9)/L, 51 and 100x10(9)/L, 21 and 50x10(9)/L, and < or = 20x10(9)/L in 100, 61, 32 and 9 patients, respectively. ICU mortality rate was 35.4%. Classifying patients into 3 categories with the following cut-offs of platelet count, > or = 150x10(9)/L, 51-149x10(9)/L, and < or = 50x10(9)/L, we observed a significant increase in ICU mortality rates which were 30.8% in the first group, 44.1% in the second group and 70.7% in the last one (p<0.0001). In multivariate analysis, thrombocytopenia < or = 50x10(9)/L appeared as an independent predictor of mortality (AOR=4.386). CONCLUSIONS: In patients admitted to ICU for severe community-acquired pneumonia, thrombocytopenia has a high prevalence and influences the outcome.
OBJECTIVE: To evaluate the prevalence and the prognostic value of thrombocytopenia in patients admitted to ICU for severe community-acquired pneumonia. METHODS: Multicentre observational study was conducted in 7 ICUs in the north of France over a 19-year period (1987-2005). The primary outcome measure was the ICU mortality. RESULTS: Eight hundred and twenty-two patients were studied. A platelet count < 150x10(9)/L was observed at ICU admission in 202 (25%) patients. Admission platelet count was between 101 and 149x10(9)/L, 51 and 100x10(9)/L, 21 and 50x10(9)/L, and < or = 20x10(9)/L in 100, 61, 32 and 9 patients, respectively. ICU mortality rate was 35.4%. Classifying patients into 3 categories with the following cut-offs of platelet count, > or = 150x10(9)/L, 51-149x10(9)/L, and < or = 50x10(9)/L, we observed a significant increase in ICU mortality rates which were 30.8% in the first group, 44.1% in the second group and 70.7% in the last one (p<0.0001). In multivariate analysis, thrombocytopenia < or = 50x10(9)/L appeared as an independent predictor of mortality (AOR=4.386). CONCLUSIONS: In patients admitted to ICU for severe community-acquired pneumonia, thrombocytopenia has a high prevalence and influences the outcome.
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