A little over a year ago, I made a short reel discussing ventilating a patient in a severe metabolic acidosis. In the video, I mentioned that minimal to no PEEP might be appropriate. Not because the patient doesn't need PEEP, but because the shortened cycle time at higher respiratory rates can unintentionally generate dynamic PEEP on its own. But what if it was intentional? What if the presence of a wider pressure when the ventilator switches into exhalation would cause the air to exit more rapidly?

In this podcast, I discuss my thought process with respiratory therapist extraordinare, Melody Bishop @melodybishop_rt. She helps surface some definitions and distinctions to terms like air-trapping, Set PEEP, & auto-PEEP while we discuss ventilation strategies in metabolic acidosis. The blog below was what I had sent her before the podcast to get all my thoughts & illustrations down in writing. As always, please follow your local guidelines, and I hope you enjoy listening to the conversation.