Table 2.
Number (%) of recordings with critical errors (CEs) and types of errors in total and per inhaler device model.
| In total | Breezhaler and/or Handihaler | Diskus (Accuhaler) | Easyhaler | Genuair and/or Novolizer | Turbuhaler | Respimat | |
|---|---|---|---|---|---|---|---|
| n Recordings | 659 | 188a | 42 | 84 | 67b | 227 | 51 |
| No error | 64 (10%) | 13 (7%) | 1 (2%) | 4 (5%) | 5 (7%) | 33 (15%) | 8 (16%) |
| ≥1 CE | 333 (51%) | 68 (36%) | 38 (90%) | 47 (56%) | 35 (52%) | 125 (55%) | 20 (39%) |
| ≥1 non-CE only | 262 (40%) | 107 (57%) | 3 (7%) | 33 (39%) | 27 (40%) | 69 (30%) | 23 (45%) |
| Number of CEs | |||||||
| 1 CE | 263 (40%) | 46 (24%) | 31 (74%) | 42 (50%) | 31 (46%) | 106 (47%) | 7 (14%) |
| 2 CEs | 63 (10%) | 18 (10%) | 7 (17%) | 5 (6%) | 4 (6%) | 18 (8%) | 10 (20%) |
| 3 CEs | 7 (1%) | 4 (2%) | 0 | 0 | 0 | 0 | 3 (6%) |
| 4 CEs | 0 | 0 | 0 | 0 | 0 | 1 (0.4%) | 0 |
| Error types | |||||||
| Not opening the device correctlyc | 16 (2%) | 1 (0.5%) | 0 | 0 | 1 (1%) | 2 (1%) | 12 (24%) |
| Errors in dose preparation and loadingc | 280 (42%) | 39 (21%) | 38 (90%) | 44 (52%) | 34 (51%) | 110 (48%) | 15 (29%) |
| No exhalation before inhalation | 429 (65%) | 124 (66%) | 26 (62%) | 55 (65%) | 42 (63%) | 154 (68%) | 28 (55%) |
| Exhalation into the device (DPIs only)c | 58 (9%) | 23 (12%) | 4 (10%) | 7 (8%) | 0 | 24 (11%) | NA |
| Not inhaling through mouthc | 1 (0.2%) | 0 | 0 | 0 | 0 | 0 | 1 (2%) |
| Errors in inhalation manoeuvrec | 57 (9%) | 31 (16%) | 3 (7%) | 1 (1%) | 4 (6%) | 10 (4%) | 8 (16%) |
| No breath-holding after inhalation | 321 (49%) | 155 (82%) | 31 (74%) | 59 (70%) | 44 (66%) | 32 (63%) | |
| Not resuming normal breathing after inhalation | 9 (1%) | 4 (2%) | 0 | 2 (2%) | 1 (1%) | 2 (1%) | 0 |
| Empty capsule not removed | 52 (8%) | 52 (28%) | NA | NA | NA | NA | NA |
| The device is not closed | 93 (14%) | 24 (13%) | 9 (21%) | 20 (24%) | 10 (15%) | 26 (11%) | 4 (8%) |
DPI dry-powder inhaler device, NA not applicable.
aBreezhaler n = 7, Handihaler n = 179, both n = 2.
bGenuair n = 40, Novolizer n = 23, both n = 4.
cA critical error.