Using the kinetics of C-reactive protein response to improve the differential diagnosis between acute bacterial and viral infections.

Abstract:

PURPOSE:Differential diagnosis between acute viral and bacterial infection is an emerging common challenge for a physician in the emergency department. Serum C-reactive protein (CRP) is used to support diagnosis of bacterial infection, but in patients admitted with low CRP, its ability to discriminate between viral and bacterial infections is limited. We aimed to use two consecutive CRP measurements in order to improve differential diagnosis between bacterial and viral infection. METHODS:A single-center retrospective cohort (n = 1629) study of adult patients admitted to the emergency department with a subsequent microbiological confirmation of either viral or bacterial infection. Trend of CRP was defined as the absolute difference between the first two measurements of CRP divided by the time between them, and we investigated the ability of this parameter to differentiate between viral and bacterial infection. RESULTS:In patients with relatively low initial CRP concentration (< 60 mg/L, n = 634 patients), where the uncertainty regarding the type of infection is the highest, the trend improved diagnosis accuracy (AUC 0.83 compared to 0.57 for the first CRP measurement). Trend values above 3.47 mg/L/h discriminated bacterial from viral infection with 93.8% specificity and 50% sensitivity. CONCLUSIONS:The proposed approach for using the kinetics of CRP in patients whose first CRP measurement is low can assist in differential diagnosis between acute bacterial and viral infection.

journal_name

Infection

journal_title

Infection

authors

Coster D,Wasserman A,Fisher E,Rogowski O,Zeltser D,Shapira I,Bernstein D,Meilik A,Raykhshtat E,Halpern P,Berliner S,Shenhar-Tsarfaty S,Shamir R

doi

10.1007/s15010-019-01383-6

subject

Has Abstract

pub_date

2020-04-01 00:00:00

pages

241-248

issue

2

eissn

0300-8126

issn

1439-0973

pii

10.1007/s15010-019-01383-6

journal_volume

48

pub_type

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