What is the First Thing You Should Do with This Patient?

A 61-year-old man presented to the emergency department with extreme respiratory distress of recent onset. He is diaphoretic and using accessory muscles to breathe. Temperature 98.9 ° SpO 2 on room air 78%.

He has an occasional cough productive of thin foamy secretions. *This case is from the Docplexus Editorial Team for educative purposes only. Source: Practical Clinical Skills