Which of the Following Statements Is True About Prone Positioning

Multiple Choice

Which of the following statements is true about prone positioning of patients with ARDS?

A) May be beneficial to patients with sustained severe ARDS (P/F ratio < 150 for more than 12 to 24 hr on stable ventilator settings) .
B) It dramatically reduces the mortality of patients with ARDS.
C) It is easy to do and helps morbidity rates of patients with ARDS.
D) It does not improve gas exchange at all.