Noninvasive Support Methods for Acute Respiratory Failure of Community-acquired Pneumonia

Participants in this arm will receive noninvasive ventilation using bilevel positive airway pressure (BiPAP) delivered via a full-face mask to support ventilation in patients with acute hypoxemic respiratory failure due to CAP.

Participants in this arm will receive high-velocity nasal insufflation therapy, a type of high-flow nasal cannula (HFNC) therapy that delivers heated and humidified oxygen at high flow rates to support patients with acute hypoxemic respiratory failure resulting from community-acquired pneumonia (CAP).