COMPARATIVE STUDY
JOURNAL ARTICLE

Procalcitonin predicts patients at low risk of death from community-acquired pneumonia across all CRB-65 classes

S Krüger, S Ewig, R Marre, J Papassotiriou, K Richter, H von Baum, N Suttorp, T Welte
European Respiratory Journal 2008, 31 (2): 349-55
17959641
The aim of the present study was to investigate the prognostic value, in patients with community-acquired pneumonia (CAP), of procalcitonin (PCT) compared with the established inflammatory markers C-reactive protein (CRP) and leukocyte (WBC) count alone or in combination with the CRB-65 (confusion, respiratory rate >or=30 breaths x min(-1), low blood pressure (systolic value <90 mmHg or diastolic value <or=60 mmHg) and age >or=65 yrs) score. In total, 1,671 patients with proven CAP were enrolled in the study. PCT, CRP, WBC and CRB-65 score were all determined on admission and patients were followed-up for 28 days for survival. In contrast to CRP and WBC, PCT levels markedly increased with the severity of CAP, as measured by the CRB-65 score. In 70 patients who died during follow-up, PCT levels on admission were significantly higher compared with levels in survivors. In receiver operating characteristic analysis for survival, the area under the curve (95% confidence interval) for PCT and CRB-65 was comparable (0.80 (0.75-0.84) versus 0.79 (0.74-0.84)), but each significantly higher compared with CRP (0.62 (0.54-0.68)) and WBC (0.61 (0.54-0.68)). PCT identified low-risk patients across CRB classes 0-4. In conclusion, procalcitonin levels on admission predict the severity and outcome of community-acquired pneumonia with a similar prognostic accuracy as the CRB-65 score and a higher prognostic accuracy compared with C-reactive protein and leukocyte count. Procalcitonin levels can provide independent identification of patients at low risk of death within CRB-65 (confusion, respiratory rate >or=30 breaths x min(-1), low blood pressure (systolic value <90 mmHg or diastolic value <or=60 mmHg) and age >or=65 yrs) risk classes.

Full Text Links

Find Full Text Links for this Article

Discussion

You are not logged in. Sign Up or Log In to join the discussion.

Related Papers

Remove bar
Read by QxMD icon Read
17959641
×

Save your favorite articles in one place with a free QxMD account.

×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"