Guiding Inspiratory Flow: Development of the In-Check DIAL G16, a Tool for Improving Inhaler Technique

Table 1

Timeframe and scope of In-Check DIAL development.

	In-Check DIAL model (date)
	5 T&S (Q4 1999)	6 T&S (Q3 2010)	G16 (Q3 2016)
Body
Dial
Basis	Optimum flow rate	Clinically effective range
Number and Inhalers covered	5	6	16
	Accuhaler (Diskus); Autohaler pMDI; Turbuhaler (M2); Turbuhaler (M3); and; conventional pMDIs	Accuhaler (Diskus); Autohaler pMDI; Easi-Breathe pMDI; Turbuhaler (M2); Turbuhaler (M3); and; conventional pMDIs	15 inhaler devices; and; conventional pMDIs; (see Figures 2 and 3)