Which of the following is the recommended tidal volume for mechanical ventilation in patients with COPD?

a. 4 to 8 ml/kg
b. 3 to 5 ml/kg
c. 6 to 8 ml/kg
d. 10 to 12 ml/kg

ANS: C
The currently acceptable tidal volume for mechanically ventilated patients in acute respiratory failure with normal lungs or with COPD is 6 to 8 ml/kg.