Non-rebreathing Oxygen Mask
USES
- delivery of high FiO2 in the spontaneously breathing patient
DESCRIPTION
- reservoir bag attached to the fresh gas flow
- one way valve between reservoir bag and patient -> prevents expired gas entering the reservoir bag.
- FiO2 usually between 0.6 to 0.9
METHOD OF INSERTION AND/OR USE
- place on patient (covering nose and mouth)
- dial up high gas flow rates (15L/min)
OTHER INFORMATION
- FiO2 of 1.0 is difficult because of valve inefficiency and lack of tight fit around the face thus entraining room air
COMPLICATIONS
- retrolental fibroplasia (corneal)
- acute O2 toxicity with hyperbaric 100% O2 -> altered mood, vertigo, LOC, convulsions.
- dry nose and mouth
- oxygen toxicity (pulmonary, CNS, CVS)
- denitrogenation -> atelectasis
- obtunding of hypoxic respiratory drive
- ? increase in infarct size in MI
- ? increase in mortality post cardiac arrest
Critical Care
Compendium
Chris is an Intensivist and ECMO specialist at The Alfred ICU, where he is Deputy Director (Education). He is a Clinical Adjunct Associate Professor at Monash University, the Lead for the Clinician Educator Incubator programme, and a CICM First Part Examiner.
He is an internationally recognised Clinician Educator with a passion for helping clinicians learn and for improving the clinical performance of individuals and collectives. He was one of the founders of the FOAM movement (Free Open-Access Medical education) has been recognised for his contributions to education with awards from ANZICS, ANZAHPE, and ACEM.
His one great achievement is being the father of three amazing children.
On Bluesky, he is @precordialthump.bsky.social and on the site that Elon has screwed up, he is @precordialthump.
| INTENSIVE | RAGE | Resuscitology | SMACC