Table 2

Number (%) of patients performing correct steps per type of inhaler

DPI (n=72)pMDI (n=33)SMI (n=11)pMDI +VHC (n=5)AH (n=1)
Make sure the mouth is empty72 (100)33 (100)11 (100)5 (100)1 (100)
Remove the cap of the device*72 (100)32 (97)10 (91)5 (100)1 (100)
Shake the device*13 (39)1 (20)1 (100)
Prepare the device correctly*62 (86)4 (36)1 (100)
Place the VHC correctly onto the device4 (80)
Keep the device upright31 (94)4 (80)1 (100)
Exhale deeply next to the device20 (28)5 (15)3 (27)1 (20)0 (0)
Stand or sit upright and bend the head slightly backwards13 (18)2 (6)3 (27)3 (60)0 (0)
Seal the mouthpiece of the device with the lips72 (100)26 (79)10 (91)4 (100)1 (100)
Make sure to not block the air holes of the device71 (99)11 (100)1 (100)
Activate the device and manage a good hand-breath coordination19 (58)8 (73)
Inhale vigorously and deeply*65 (90)
Inhale slowly and deeply7 (21)4 (36)0 (0)
Activate the device and inhale deeply within 5 s. after activation5 (100)
Hold breath for 10 s22 (31)6 (18)4 (36)1 (20)0 (0)
Inhale and exhale five times in the VHC3 (60)
Rinse the mouth and spit out (if corticosteroids)35 (67)3 (43)2 (40)1 (100)
  • *Critical steps.

  • AH, autohaler; DPI, dry powder inhaler; pMDI, pressurised metered-dose inhalers; SMI, soft mist inhalers; VHC, valved holding chamber.