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Parameters describing transient QD and SD waveforms
| Parameters | Units | Description | QD profile | SD profile |
|---|---|---|---|---|
| PIFR | L/min | Peak inhalation flow rate | 122.2 | 61.4 |
| Q(t) | L/min | Transient inhalation flow rate | Eq. 2 | Eq. 2 |
| Q̄ | L/min | Mean inhalation flow rate | 75 | 37 |
| T | s | Period of inhalation | 2.4 | 4.86 |
| TPIFR | s | Time to peak inhalation flow rate | 0.4 | 1.22 |
| TFPIFR | - | Time fraction of peak inhalation flow rate | 1/6 | 1/4 |
| Vinhale | L | Total volume inhaled | 3 | 3 |
