Tidal volume using ARDSnet target of 6 mL/kg with PBW 82.2 kg.

• A. 493 mL
• B. 400 mL
• C. 450 mL
• D. 520 mL

Answer: (A)

In ARDSnet low tidal volume ventilation, the tidal volume is set using predicted body weight: tidal volume equals 6 mL per kilogram of PBW. With a PBW of 82.2 kg, multiply 82.2 by 6 to get 493.2 mL. So the target is about 493 mL. This approach standardizes lung stretch across patients by PBW rather than actual weight, helping to minimize volutrauma. The value you’d set on the ventilator is around 493 mL, aligning with the 6 mL/kg target.