>Hey, I just call 'em as I see 'em. Let me get this straight, you make an incredibly vague post questioning a procedure citing something you read somewhere. And then when another poster suggests the hospital may bill for it because its provided by a different profession than yours, you agree. And then after four pages of posters asking you to cite what you "read somewhere" you post the title of a nursing textbook. Perhaps for the benefit of the "OTHERS" you can tell us the chapter or even the page you're talking about. FTR: According to Chapter 39, pg. 907 under the ASSSESMENT OF OUTCOME heading in 'Egans Fundamentals of Respiratory Care' 9th edition, the benefits of I.S. include - improvement in signs of atelectasis, decreased RR, resolution of fever, return to normal pulse rate, improved breath sounds, improvement in chest radiograph, increased PaO2 & decreased PaCO2 (be sure not to confuse with PAO2 & PACO2), improved vital capaciy and peak flows, return of FRC to preoperative values (unless a pnuemonectomy was performed) and improved inspiratory muscle function. All this with a fairly inexspensive, non invasive, portable, easy to operate piece of equipment.