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 Vᴛs = 8-10 mL/kg.
C) Ventilating acute respiratory distress syndrome (ARDS) patient with plateau pressure Pₚₗₐₜₑₐᵤ >30 cm H₂O.
D) Pressure-supported ventilation with tidal volume (Vᴛ) = 4-6 mL/kg