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Cytomegalovirus reactivation in ICU patients

Laurent Papazian1,2, Sami Hraiech3,4, Samuel Lehingue3,4

  • 1Faculté de Médecine, Aix-Marseille Université, URMITE UMR CNRS 7278, 13005, Marseille, France. laurent.papazian@ap-hm.fr.

Intensive Care Medicine
|October 2, 2015
PubMed
Abstract

Insights

Cytomegalovirus (CMV) infection in intensive care unit (ICU) patients may impact outcomes. Further research is needed to confirm if CMV is a pathogen or bystander and to evaluate antiviral treatments.

Area of Science:

  • Critical Care Medicine
  • Infectious Diseases
  • Virology

Background:

  • Cytomegalovirus (CMV) pneumonia was previously reported in non-immunocompromised ICU patients.
  • Recent studies suggest CMV may worsen ICU patient outcomes, but its role remains debated.
  • The question persists whether CMV acts as a pathogen or a bystander in ICU settings.

Purpose of the Study:

  • To review the pathophysiology and epidemiology of active CMV infection in ICU patients.
  • To assess the potential impact of CMV infection on patient outcomes.
  • To highlight the need for further research and clinical trials.

Main Methods:

  • Review of the pathophysiology of active CMV infection.
  • Analysis of recent epidemiological insights into CMV reactivation in ICU patients.
  • Discussion of diagnostic methods and their impact on incidence rates.

Main Results:

  • Active CMV infection can manifest through direct organ damage, reduced host defenses, or enhanced inflammation (e.g., ARDS).
  • Incidence of active CMV infection in ICU patients varies by diagnostic method, reaching 15-20% with advanced tools.
  • Active CMV infection is associated with poorer outcomes in mechanically ventilated ICU patients.

Conclusions:

  • Direct proof of CMV's negative impact on outcomes for ventilated patients is lacking.
  • Prospective randomized trials are needed to definitively establish CMV's role.
  • Future research should explore the benefits of prophylactic, pre-emptive, or treatment-based antiviral strategies.
Keywords:
CytomegalovirusICUIncidenceMechanical ventilationMortalityReactivation

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