Table 2.
Velocity peak of femoral artery flow during quiet spontaneous breathing and deep inspiration maneuver in healthy volunteers.
| N | VF during quiet spontaneous | VF during deep inspiration | ΔVF (%) | ΔVFdim (%) | ||||
|---|---|---|---|---|---|---|---|---|
| breathing (cm/s) | maneuver (cm/s) | |||||||
| Inspiration | Exhalation | Phase 1 | Phase 2 | Phase 3 | Phase 4 | |||
| 1 | 81.2 | 92.2 | 73.2 | 92.1 | 64 | 92.9 | 12.7 | 13.4 |
| 2 | 64 | 72.3 | 59 | 71.2 | 55.4 | 76.5 | 12.2 | 17.8 |
| 3 | 71.8 | 82.8 | 62.1 | 82.9 | 51.7 | 88 | 14.2 | 20.3 |
| 4 | 75.7 | 83.5 | 68.1 | 82.6 | 52.1 | 87.8 | 9.8 | 14.8 |
| 5 | 56.1 | 61.3 | 50 | 66.9 | 36.4 | 64.8 | 8.9 | 17.6 |
| 6 | 86.8 | 91.6 | 81.3 | 99.6 | 76.3 | 88.8 | 5.4 | 13.7 |
| Mean ± SD | 72.6 ± 11.2 | 80.6 ± 11.9 | 65.6 ± 11 | 82.6 ± 12.3 | 56 ± 13.4 | 83.1 ± 10.5 | 10.5 ± 3.2 | 16.2 ± 2.7a |
VF, velocity peak of femoral artery flow; ΔVF, respiration-induced change in VF; ΔVFdim, deep-inspiration-maneuver-induced change in VF. a P < 0.05 versus ΔVF. Values are expressed as mean ± SD.