Angiotensin-converting enzyme inhibitor–mediated angioedema is the most common cause of and accounts for one-third emergency department visits angioedema. Nonpitting edema face, lips, tongue, supraglottic/glottic structures may be present, with 9.5 to 15% patients requiring airway management.1,2 When respiratory difficulties are mortality rate 11%.3 can unprovoked or triggered by trauma, includ...