Management of Viral Acute Respiratory Distress Syndrome (ARDS)

Initial Ventilation Strategy

The American Thoracic Society recommends implementing lung-protective ventilation with low tidal volumes (4-8 mL/kg predicted body weight) and limiting plateau pressures (<30 cmH₂O) to prevent ventilator-induced lung injury 1, 3, 4
The American College of Chest Physicians suggests using higher PEEP without lung recruitment maneuvers for moderate to severe ARDS (PaO₂/FiO₂ <200 mmHg) (conditional recommendation, low to moderate certainty) 1, 2, 3
The Society of Critical Care Medicine recommends avoiding prolonged lung recruitment maneuvers in moderate to severe ARDS (strong recommendation, moderate certainty) 1, 2, 4
The European Society of Intensive Care Medicine recommends maintaining SpO₂ no higher than 96% to avoid oxygen toxicity 5
Consider high-flow nasal cannula (HFNC) over conventional oxygen therapy for acute hypoxemic respiratory failure before proceeding to invasive ventilation 5

The American Thoracic Society recommends implementing prone positioning for 12-16 hours daily in severe ARDS (PaO₂/FiO₂ <100 mmHg) 5, 6
The Society of Critical Care Medicine suggests using neuromuscular blocking agents (NMBAs) in early severe ARDS (conditional recommendation, low certainty of evidence) 1, 2
The European Society of Intensive Care Medicine recommends administering systemic corticosteroids for ARDS (conditional recommendation, moderate certainty of evidence) 1, 2, 3

The American College of Chest Physicians recommends considering venovenous extracorporeal membrane oxygenation (VV-ECMO) in selected patients with severe ARDS (PaO₂/FiO₂ <100 mmHg) who fail conventional management (conditional recommendation, low certainty of evidence) 1, 2, 3
The European Society of Intensive Care Medicine recommends considering a trial of inhaled pulmonary vasodilator as rescue therapy for severe hypoxemia despite optimized ventilation; discontinue if no rapid improvement in oxygenation 5
The Society of Critical Care Medicine recommends avoiding routine use of inhaled nitric oxide 5

The European Society of Intensive Care Medicine recommends implementing a conservative fluid management strategy to minimize pulmonary edema while maintaining adequate organ perfusion 5, 6
The Society of Critical Care Medicine recommends avoiding fluid overload, which can worsen pulmonary edema and promote right ventricular failure 6

The European Society of Intensive Care Medicine recommends continuously monitoring oxygen saturation, respiratory mechanics, and hemodynamics 6
The Society of Critical Care Medicine recommends using echocardiography to assess right ventricular function and detect acute cor pulmonale in severe cases 6
The American Thoracic Society recommends closely monitoring for worsening respiratory status in patients receiving non-invasive ventilation or HFNC, with early intubation in a controlled setting if deterioration occurs 5

The European Society of Intensive Care Medicine recommends following the same principles of lung-protective ventilation and prone positioning for COVID-19 ARDS as for other causes of ARDS 5
The Society of Critical Care Medicine recommends considering systemic corticosteroids for COVID-19 ARDS, which has shown mortality benefit 5
The American College of Chest Physicians recommends being vigilant for barotrauma when using higher PEEP strategies (PEEP >10 cm H₂O) in COVID-19 patients 5