Fig 2.
Gain in safe apnoea times, calculated as difference in min to reach SaO2 90% between HFNO with end-tidal oxygen fraction (FE′O2) of 60%, 70%, 80%, 90%, and facemask with FE′O2 of 90%. HFNO, high flow nasal oxygen therapy.
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.