You know what it looks like… but what is it called?
TAKE THE QUIZ“positive pressure breathing”
We have one entry that includes the term positive pressure breathing.
intermittent positive pressure breathing
noun: enforced periodic inflation of the lungs by the intermittent application of an increase of pressure to a reservoir of air (as in a bag) supplying the lungs —abbreviation IPPB
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Merriam-Webster unabridged