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CRB-65-score

German: CRB-65-Index
Synonym: CRB65-Score

1 Definition

The CRB-65-score is a clinical score that is used to roughly estimate the severity of community-acquired pneumonias. The score corresponds to the statistical probability of patients dying because of pneumonia.

2 Classification

The following criteria are used to score the CRB-65:

One point is awarded for each criterion that is found to be positive, meaning that the highest possible score is 4.

There is a variant of the CRB-65-score called the CURB. The "U" in CURB refers to (U)rea – nitrogen. In this variant one point is given if the concentration is > 7 mmol/l. This measurement requires quick laboratory diagnostic.[1]

3 Interpretation

Patients with a score of 0 can be treated as outpatients and have a negligible probability of dying due to pneumonia. A score of 1 or 2 suggests that the patient should receive treatment in a hospital. Patients with scores of 3-4 should receive intensive care. In the case that the physician decides on outpatient treatment an appointment for a "second look" 24-48 hours later should be made. The mortality is increased to roughly 5% for patients with a score of 1-2 points. With 3-4 points it increases over 20%.[2]

4 Sources

  1. Risikostratifizierung durch den CRB-65-Index, Kompetenznetz Ambulant Erworbene Pneumonie - CAPNETZ - gefördert vom Bundesministerium für Bildung und Forschung. abgerufen 16.07.2014.
  2. Bauer TT et al. CRB-65 predicts death from community-acquired pneumonia. J Intern Med. 2006 Jul;260(1):93-101

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