Table 4.
Correlation coefficient (Spearman’s ρ) of microcirculatory and other measured variables during CPR, n = 18
| ABP | CBF | Lactate | HGB | |
|---|---|---|---|---|
| Small vessels (≤20 µm) | ||||
| TVD (mm/mm2) | 0.20 | 0.09 | −0.23 | −0.03 |
| PVD (mm/mm2) | −0.08 | 0.06 | −0.05 | 0.09 |
| PPV (%) | −0.23 | 0.12 | −0.05 | 0.15 |
| MFI | −0.22 | 0.10 | −0.02 | 0.15 |
| HI | 0.20 | −0.46 | 0.08 | −0.03 |
| Other vessels (>20 µm) | ||||
| TVD (mm/mm2) | 0.12 | −0.02 | 0.06 | 0.16 |
| PVD (mm/mm2) | 0.09 | −0.01 | 0.08 | 0.12 |
| PPV (%) | −0.20 | 0.03 | 0.11 | −0.51 |
| MFI | −0.27 | −0.05 | −0.34 | 0.10 |
| HI | 0.27 | 0.10 | 0.36 | −0.12 |
After Bonferroni adjustment for multiple correlations all correlations are non-significant
TVD total vessel density, PVD perfused vessel density, PPV proportion of perfused vessels, MFI microvascular flow index, ABP mean arterial blood pressure, CBF carotid blood flow, HGB hemoglobin level