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In the Southern Hemisphere I recently came across a chest specialist who had gone "bird-mad." He had persuaded his hospital authorities not only to buy a dozen or two artificial ventilation machines but also to send one of his nurses all the way to Europe to learn how to handle, coax, and trouble-shoot the brutes. Being thus equipped, he naturally had to employ them; and his wards were a sight to see. He used them chiefly in the treatment and cure of asthma. ("Psychosomatic" was a dirty word in that hospital.) He even arranged for his wealthier patients to acquire one to take home with them in order to enjoy a puff or two in the evenings. I actually once found one tied to a road-accident patient, suffering—to my obsolescent eyes—from traumatic, undiagnosed and untreated, pneumothorax.
Consequently, I took a dim and (as it proved) erroneous view of the whole
Day G. Mechanical Artificial Ventilation (A Manual for Students and Practitioners).. Arch Intern Med. 1968;121(5):475-476. doi:10.1001/archinte.1968.03640050085022