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Detection of Invasive Pulmonary Aspergillosis in Haematological Malignancy Patients by using Lateral-flow Technology
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Published on: March 22, 2012

A clinical algorithm to diagnose invasive pulmonary aspergillosis in critically ill patients

Stijn I Blot1, Fabio Silvio Taccone, Anne-Marie Van den Abeele

  • 1General Internal Medicine and Infectious Diseases, Ghent University Hospital, De Pintelaan 185, Ghent, Belgium. stijn.blot@ugent.be

American Journal of Respiratory and Critical Care Medicine
|April 21, 2012
PubMed
Abstract

Insights

A new algorithm effectively distinguishes Aspergillus colonization from invasive aspergillosis in critically ill patients with positive endotracheal aspirates, improving diagnostic accuracy.

Area of Science:

  • Critical care medicine
  • Infectious diseases
  • Mycology

Background:

  • Assessing Aspergillus-positive endotracheal aspirates in critically ill patients is challenging.
  • Differentiating colonization from invasive pulmonary aspergillosis is crucial for appropriate treatment.

Purpose of the Study:

  • To externally validate a clinical algorithm for discriminating Aspergillus colonization from invasive pulmonary aspergillosis.
  • To evaluate the algorithm's diagnostic accuracy in critically ill patients.

Main Methods:

  • Multicenter observational study of 524 critically ill patients with Aspergillus-positive endotracheal aspirates.
  • Algorithm validation using histopathology (gold standard) in 115 patients.
  • Comparison with European Organization for the Research and Treatment of Cancer/Mycoses Study Group criteria in the total cohort.

Main Results:

  • The algorithm showed 92% sensitivity and 61% specificity in distinguishing aspergillosis.
  • In the total cohort, 15.1% had proven invasive pulmonary aspergillosis.
  • The algorithm categorized 38.0% as putative aspergillosis and 46.9% as colonization.

Conclusions:

  • The validated algorithm demonstrates favorable operating characteristics.
  • It can effectively discriminate respiratory tract colonization from invasive pulmonary aspergillosis in critically ill patients.
  • This tool aids in better patient management and treatment decisions.

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