Table 4.
Effects of different inspiratory patterns on EIF, MDT, and lnMDT
| TI 33%, TP 10% | TI 15%, TP 28% | TI 15%, TP 35% | |||||||
|---|---|---|---|---|---|---|---|---|---|
| SHAPE | Increasing flow | Constant flow | Decreasing flow | Increasing flow | Constant flow | Decreasing flow | Increasing flow | Constant flow | Decreasing flow |
| EIF, ml/s | 1,106 | 553 | 0 | 2,433 | 1,217 | 0 | 2,433 | 1,217 | 0 |
| MDT | 0.41 | 0.52 | 0.71 | 0.80 | 0.86 | 0.95 | 0.99 | 1.05 | 1.14 |
| lnMDT | -0.90 | -0.66 | -0.34 | -0.22 | -0.15 | -0.05 | -0.01 | 0.05 | 0.13 |
| ΔVTCO2%, all subjects | 1 | 2 | 4 | 17 | 12 | 8 | 20 | 15 | 10 |
| ΔVTCO2%, subject 4 | 5 | 2 | 1 | 34 | 19 | 6 | 37 | 23 | 9 |
Effects on ΔVTCO2 were calculated by using mean coefficients a and b for all subjects (Eq. 1) and coefficients for subject 4 who had a high coefficient b.