What are the key elements of lung-protective ventilation in ARDS?

What are the key elements of lung-protective ventilation in ARDS?

• A. VT ~6 mL/kg PBW; plateau pressure ≤30 cm H2O; appropriate PEEP; careful FiO2.
• B. VT ~10 mL/kg PBW; plateau pressure ≤50 cm H2O.
• C. Avoid PEEP entirely.
• D. FiO2 should be 1.0.

Answer: (A)

Lung-protective ventilation in ARDS centers on limiting ventilator-related injury by using smaller lung stretches and controlled pressures, along with careful oxygen management. The best approach uses a low tidal volume of about 6 mL per kilogram of predicted body weight to reduce volutrauma in stiff, injured lungs. Keep the plateau pressure during an inspiratory hold at or below 30 cm H2O to limit distending pressure on the alveoli and reduce barotrauma. PEEP is used to prevent alveolar collapse and repetitive opening and closing, improving oxygenation, but it must be titrated to avoid overdistension. FiO2 should be reduced to the lowest level that maintains adequate oxygenation, minimizing oxygen toxicity from prolonged high concentrations. In contrast, higher tidal volumes, accepting plateau pressures up to 50 cm H2O, avoiding PEEP, or maintaining FiO2 at 1.0 all fail to protect the lung and increase the risk of ventilator-induced injury.

Lung-protective ventilation in ARDS centers on limiting ventilator-related injury by using smaller lung stretches and controlled pressures, along with careful oxygen management. The best approach uses a low tidal volume of about 6 mL per kilogram of predicted body weight to reduce volutrauma in stiff, injured lungs. Keep the plateau pressure during an inspiratory hold at or below 30 cm H2O to limit distending pressure on the alveoli and reduce barotrauma. PEEP is used to prevent alveolar collapse and repetitive opening and closing, improving oxygenation, but it must be titrated to avoid overdistension. FiO2 should be reduced to the lowest level that maintains adequate oxygenation, minimizing oxygen toxicity from prolonged high concentrations. In contrast, higher tidal volumes, accepting plateau pressures up to 50 cm H2O, avoiding PEEP, or maintaining FiO2 at 1.0 all fail to protect the lung and increase the risk of ventilator-induced injury.