Diagnostic Accuracy of Quick SOFA Score and Inflammatory Biomarkers for Predicting Community-onset Bacteremia

Overview

Journal Sci Rep

Specialty Science

Date 2022 Jul 1

PMID 35778478

Authors

Takashi Matono

Maki Yoshida

Hidenobu Koga

Rie Akinaga

Affiliations

Soon will be listed here.

Abstract

The potential use of quick SOFA (qSOFA) score and inflammatory biomarkers as bacteremia predictors is unelucidated. Herein the aim of this study was to evaluate the diagnostic accuracy of the qSOFA score and biomarkers for predicting community-onset bacteremia. We enrolled adult outpatients with blood culture samples drawn between 2018 and 2020. Contamination, intensive care unit admission, and hemodialysis were excluded. We performed a case-control study, and analyzed 115 patients (58 with bacteremia and 57 without bacteremia). The positive likelihood ratio (LR) for bacteremia was 2.46 (95% confidence interval [CI] 0.76-9.05) for a qSOFA score ≥ 2, and 4.07 (95% CI 1.92-9.58) for tachypnea (≥ 22/min). The highest performing biomarkers were procalcitonin (area under the curve [AUC] 0.80; 95% CI 0.72-0.88), followed by presepsin (AUC 0.69; 95% CI 0.60-0.79), and C-reactive protein (AUC 0.60; 95% CI 0.49-0.70). The estimated optimal cut-off value of procalcitonin was 0.377 ng/mL, with a sensitivity of 74.1%, a specificity of 73.7%, and a positive LR of 2.82. Presepsin was 407 pg/mL, with a sensitivity of 60.3%, a specificity of 75.4%, and a positive LR of 2.46. Procalcitonin was found to be a modestly useful biomarker for predicting non-severe community-onset bacteremia. Tachypnea (≥ 22/min) itself, rather than the qSOFA score, can be a diagnostic predictor. These predictors may aid decision-making regarding the collection of blood culture samples in the emergency department and outpatient clinics.

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