Proper use of a metered-dose inhaler (MDI) Proper use of a metered-dose inhaler (MDI). Inhaler image reprinted with permission from Kelly HW, Sorkness CA. Asthma. In: DiPiro JT, Talbert RL, Yee GC, et al, eds. Pharmacotherapy: A Pathophysiologic Approach, 8th ed. New York: McGraw-Hill, 2011. Figure 33–4, 448. Source: Respiratory Disorders, Pharmacotherapy Principles & Practice, 4e Citation: Chisholm-Burns MA, Schwinghammer TL, Wells BG, Malone PM, Kolesar JM, DiPiro JT. Pharmacotherapy Principles & Practice, 4e; 2016 Available at: http://ppp.mhmedical.com/DownloadImage.aspx?image=/data/books/1793/chis_ch14_f001.png&sec=120649641&BookID=1793&ChapterSecID=120647250&imagename= Accessed: October 24, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved