Sigh Breaths Could Be Beneficial During Which of the Following

Multiple Choice

Sigh breaths could be beneficial during which of the following situations?

A) Continuous positive airway pressure (CPAP) used for the treatment of hypoxemia
B) Mechanical ventilation with V_TS = 8-10 mL/kg
C) Ventilating acute respiratory distress syndrome (ARDS) patient with plateau pressure P_plateau > 30 cm H₂O
D) Pressure-supported ventilation with tidal volume (V_T) = 4-6 mL/kg