SCOOP transtracheal oxygen is indicated for patients with chronic hypoxemia which persists in spite of optimal medical therapy. Arterial blood gases obtained while breathing room air should show a PaO...

SCOOP transtracheal oxygen is indicated for patients with chronic
hypoxemia which persists in spite of optimal medical therapy.
Arterial blood gases obtained while breathing room air should show a
PaO2 55 mm Hg. SCOOP transtracheal oxygen is also indicated for
patients with a PaO2 of 56-59 mm Hg ...

if they also have 1)
dependent edema suggesting congestive heart failure, 2) P pulmonale
on EKG (P wave greater than 3mm in standard leads II, III or AVF),
or 3) erythrocythemia with a hematocrit of 55%.