Table 3.
Correlation between large-vessel and TcPO2 stimulation parameters.
| Large-vessel parameters | TcPO2 parameters | r | p-value |
|---|---|---|---|
| Systolic blood pressure in DPA (mm Hg) | Minimal TcPO2 | 0.0746 | NS |
| Δ of TcPO2 | -0.05360 | NS | |
| % decrease of TcPO2 | -0.0678 | NS | |
| Duration of TcPO2 recovery | -0.2045 | 0.0784 | |
| Systolic blood pressure in PTA (mm Hg) | Minimal TcPO2 | 0.0916 | NS |
| Δ of TcPO2 | -0.0446 | NS | |
| % decrease of TcPO2 | -0.0703 | NS | |
| Duration of TcPO2 recovery | -0.1602 | NS | |
| ABI-DPA | Minimal TcPO2 | 0.2634 | 0.0175 |
| Δ of TcPO2 | -0.1758 | NS | |
| % decrease of TcPO2 | -0.2148 | 0.0542 | |
| Duration of TcPO2 recovery | -0.2096 | 0.0604 | |
| ABI-PTA | Minimal TcPO2 values | 0.2208 | 0.0297 |
| Δ of TcPO2 | -0.1345 | NS | |
| % decrease of TcPO2 | -0.1758 | 0.0850 | |
| Duration of TcPO2 recovery | -0.2303 | 0.0233 | |
| TP (mm Hg) | Minimal TcPO2 | 0.2864 | 0.0127 |
| Δ of TcPO2 | -0.3655 | 0.0013 | |
| % decrease of TcPO2 | -0.3619 | 0.0014 | |
| Duration of TcPO2 recovery | -0.4113 | 0.0002 | |
| TBI | Minimal TcPO2 | 0.3533 | 0.0017 |
| Δ of TcPO2 | -0.4051 | 0.0003 | |
| % decrease of TcPO2 | -0.4141 | 0.0002 | |
| Duration of TcPO2 recovery | -0.4747 | <0.0001 |
n, number; r, correlation coefficient; DPA, dorsalis pedis artery; PTA, posterior tibial artery; ABI, ankle-brachial index; mm Hg, millimetres of mercury; TP, toe pressure; TBI, toe-brachial index; TcPO2, transcutaneous oxygen measurement; mm Hg, millimetres of mercury; Δ, delta difference; %, percentage; NS, non-significant.