Table 3.
VRI image characteristics in AECOPD patients before NPPV treatment and after NPPV treatment
| TP | VCG | DIG | MEFG | EVPG | RG | AVRIS | QLDD |
|---|---|---|---|---|---|---|---|
| T1 |
3.08 ± 0.92 |
7.75 ± 1.65 |
4.21 ± 1.25 |
2.41 ± 1.12 |
0.79 ± 0.29 |
18.13 ± 3.67 |
0.34 ± 37.44 |
| T2 |
2.75 ± 1.15 |
5.83 ± 2.39 |
2.88 ± 1.59 |
1.46 ± 0.67 |
0.83 ± 0.31 |
13.16 ± 3.67 |
4.11 ± 32.61 |
| T4 |
2.78 ± 0.51 |
6.51 ± 0.58 |
4.25 ± 0.85 |
1.75 ± 0.51 |
0.75 ± 0.31 |
15.25 ± 1.26 |
2.89 ± 35.45 |
| F |
1.39 |
5.64 |
5.76 |
5.98 |
0.29 |
6.18 |
4.33 |
| P | 0.26 | <0.01 a, b c | <0.01 a,b | <0.01 a,b,c | 0.75 | <0.01 a,b,c | 0.02 a, b |
Post hoc: aP < 0.05 (T2 vs. T1); bP < 0.05 (T4 vs. T2), cP < 0.05 (T4 vs.T1).
Abbreviation: TP = Time point, T1 = Before NPPV treatment, T2 = at 15 min of NPPV treatment, T4 = at 15 min after the end of NPPV treatment, VC Score = Score of vibration curve, DI Score = Grading of dynamic image, MEF Score = Score of maximal energy frame image, EVPG = Grading of expiratory vibration energy peak, RG = Grading of rales, AVRIS = Abnormal VRI score, QLDD = The QLD changes between the right and left lungs.