title: C-reactive protein as an indicator of resolution of sepsis in the intensive care unit.
abstract: OBJECTIVE
  To investigate the value of decreasing plasma C-reactive protein (CRP) concentrations as an indicator or resolution of microbiologically-proven sepsis.
  
  
  METHODS
  Retrospective analysis of CRP concentrations measured during episodes of microbiologically-proven sepsis. A receiver-operating characteristic (ROC) curve was used to assess the usefulness of CRP as a test for resolution of sepsis.
  
  
  METHODS
  The intensive care unit (ICU) of a teaching hospital.
  
  
  METHODS
  32 episodes of microbiologically-proven sepsis occurring in 18 patients were followed from diagnosis until resolution.
  
  
  RESULTS
  Daily routine observations and blood testing were performed prospectively. The daily presence or absence of systemic inflammatory response syndrome (SIRS) was prospectively determined according to standard definitions. Concentrations of CRP were analysed retrospectively once the patients had left the ICU. A decrease in CRP by 25% or more from the previous day's level was a good indicator of resolution of sepsis, with a sensitivity of 97%, specificity of 95% and predictive value of 97%. In 13 cases (46%), a decrease in CRP preceded clinical resolution of sepsis; this was more likely to occur in patients with less severe sepsis than in those with severe sepsis or septic shock.
  
  
  CONCLUSIONS
  Daily measurement of CRP is useful for monitoring the course of microbiologically-proven sepsis in ICU patients, and may be used to indicate successful treatment.
authors.affiliation: Magill Department of Anaesthesia, Chelsea and Westminster Hospital, London, UK.
authors.forename: S M
authors.initials: SM
authors.lastname: Yentis
authors.forename: N
authors.initials: N
authors.lastname: Soni
authors.forename: J
authors.initials: J
authors.lastname: Sheldon
mesh_terms: D015415:Biomarkers / Q000097:blood; D002097:C-Reactive Protein / Q000378:metabolism*; D003289:Convalescence; D006801:Humans; D011446:Prospective Studies; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D018805:Sepsis / Q000097:blood* / Q000382:microbiology; D012720:Severity of Illness Index; D013997:Time Factors
chemical_list: D015415:Biomarkers; D002097:C-Reactive Protein