Fig. 1.
Study flowchart. NIV noninvasive ventilation, HHFOT humidified high flow oxygen therapy, ICU intensive care unit
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.