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. 2016 Jan 26;53(3):321–329. doi: 10.3109/02770903.2015.1099160

Table 1. Checklist of predefined serious errors for the Diskus device.

Does not slide cover as far as possible  
Does not slide lever fully to open mouthpiece  
Holds in a downward position after dose preparation (before an inhalation)  
Shakes after dose preparation  
Blowing into the device  
Failure to exhale before inhalation  
Failure to put in mouth and seal lips around mouthpiece  
Failure to inhale through mouthpiece  
Inhalation through the nose  
Inhalation is not forceful from the start  
No breath-hold for at least 3 s  
Does not prepare second dose correctly  
Does not correctly inhale second dose as above  
Does not know when his or her device is empty