Table 3.
Mean microcirculatory parameters total vessel density (TVD), perfused vessel density (PVD), proportion of perfused vessels (PPV), microvascular flow index (MFI) and heterogeneity index (HI) for small and non-small vessels measured by IDF and SDF
| IDF (SD) | SDF (SD) | Change (%) | p value* | |
|---|---|---|---|---|
| TVD small (n/mm) | 14.8 (2.1) | 12.5 (1.8) | +18.4 | .001 |
| TVD non-small (n/mm) | 2.1 (1.1) | 1.6 (1.1) | +31.3 | .070 |
| TVD total (n/mm) | 16.9 (2.0) | 14.1 (1.3) | +19.9 | .000 |
| PPV small (%) | 88.0 (9.4) | 93.6 (7.6) | −5.6 | .003 |
| PPV non-small (%) | 95.1 (8.4) | 98.9 (2.2) | −3.8 | .023 |
| PPV total (%) | 88.7 (9.1) | 93.9 (7.4) | −5.2 | .002 |
| PVD small (n/mm) | 13.0 (2.1) | 11.6 (1.9) | +12.1 | .033 |
| PVD non-small (n/mm) | 2.0 (1.1) | 1.6 (1.1) | +25.0 | .103 |
| PVD total (n/mm) | 15.0 (2.2) | 13.2 (1.7) | +13.6 | .001 |
| MFI small (au) | 2.78 (0.3) | 2.75 (0.3) | +1.1 | .621 |
| MFI non-small (au) | 3.00 (–) | 3.00 (–) | – | – |
| HI small (au) | 0.22 (0.19) | 0.24 (0.18) | −8.3 | .650 |
| HI non-small (au) | 0.00 (–) | 0.00 (–) | – | – |
au = arbitrary units
* Wilcoxon signed rank test for paired continuous data