Table 1. Phase classification of hemodynamic responses.
Phase | Description | Relationships between the 4 indicators |
---|---|---|
Phase 1 | Hyperoxia/Hyperemia | 0 < ΔD < ΔO, ΔCOE < 0 < ΔCBV |
Phase 2 | Hypoxia/Hyperemia | 0 < ΔO < ΔD, 0 < ΔCOE < ΔCBV |
Phase 3 | Hypoxia/Hyperemia | ΔO < 0 < ΔD, 0 < ΔCBV < ΔCOE |
Phase 4 | Hypoxia/Ischemia | ΔO < 0 < ΔD, ΔCBV < 0 < ΔCOE |
Phase 5 | Hypoxia/Ischemia | ΔO < ΔD < 0, ΔCBV < 0 < ΔCOE |
Phase -1 | Hyperoxia/Hyperemia | ΔD < 0 < ΔO, ΔCOE < 0 < ΔCBV |
Phase -2 | Hyperoxia/Ischemia | ΔD < 0 < ΔO, ΔCOE < ΔCBV < 0 |
Phase -3 | Hyperoxia/Ischemia | ΔD < ΔO < 0, ΔCBV < ΔCOE < 0 |