Wikihopping #3 (Dust Bowl to 'The Muppet Show') by HerzogA

Question 4

[Iron lung] The iron lung is a negative pressure ventilator that creates an external vacuum to expand the chest cavity and allow the lungs to expand. This has largely been replaced with positive pressure ventilation methods such WHAT PROCEDURE, in which an internal pressure is delivered to the lungs via a flexible plastic tube?

(Tracheal) Intubation