Lung Imaging in ARDS

  • Silvia Coppola
  • Sara Froio
  • Davide ChiumelloEmail author


The definition of acute respiratory distress syndrome (ARDS) has been recently revised with the new Berlin definition [1]. According to this latest definition, the diagnosis is based on the onset of the hypoxemia and of bilateral radiological opacities within 1 week. Three mutually exclusive categories of ARDS based on the degree of hypoxemia were identified (mild, ≤300 mmHg PaO2/FiO2 > 200 mmHg; moderate, ≤200 mmHg PaO2/FiO2>100 mm Hg; severe, PaO2/FiO2 ≤100 mmHg with a positive end-expiratory pressure ≥5 cmH2O) associated with increased mortality and associated with median length of mechanical ventilation in survivors. The new definition updated the following concepts:
  • The specific time frame identifying the acute onset as “ARDS developing within 1 week of a known clinical insult or new/worsening respiratory symptoms”

  • The origin of edema judging ARDS, a respiratory failure not fully explained by cardiac failure or fluid overload

  • The chest radiological criterion specifying that it should include bilateral opacities not fully explained by effusion, lobar lung collapse on chest radiograph, or on CT scan if available


Acute Respiratory Distress Syndrome Electrical Impedance Tomography Acute Respiratory Distress Syndrome Patient Recruitment Maneuver Lung Recruitment 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer International Publishing Switzerland 2017

Authors and Affiliations

  1. 1.Dipartimento di Anestesia, Rianimazione ed Emergenza UrgenzaFondazione IRCCS Ca’ Granda–Ospedale Maggiore PoliclinicoMilanItaly
  2. 2.Director of Anaesthesia and Intensive Care Services, ASST Santi Paolo e Carlo, Department of Scienze della SaluteUniversity of MilanMilanItaly

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