EMCrit Wee – Should a Nasal Cannula be Part of Denitrogenation / Preoxygenation - a podcast by Scott D. Weingart, MD FCCM

In the LaMW: Ox Kills podcast, I discussed preoxygenation strategies. Sam Ghali had some questions; this wee has the answers.

Groombridge et al.

NRB @ 15 lpm  = 52.6%

NRB @ 15 lpm + NC @ 5 lpm = 57.1%



Max with anesthesia circuit

Hayes-Bradley et al.

http://www.annemergmed.com/article/S0196-0644(15)01500-0/abstract



Here are their numbers (they also simulated air leaks in this study)



NRB @ 15 lpm alone = 52% ETO2



NRB @ 15 lpm + NC @ 10 lpm = 67%



BVM = 79%



BVM with Mask Leak: BVM markedly improved with NC

Russell_et_al.

Nasal cannula improved ETO2 when mask leak was created

Further episodes of EMCrit Podcast

Further podcasts by Scott D. Weingart, MD FCCM

Website of Scott D. Weingart, MD FCCM