Table 2.
Detailed results of nerve conduction study, MRC scale for peripheral muscle weakness and WIND score for diaphragmatic weakness leading to weaning difficulties
| N° | First nerve conduction study |
PENT (mV) evolution R / L (day from intubation) |
Muscle strength according to MRC Pathological below 48/60 points (day from intubation) |
WIND score 0: died before attempt 1: short 2: difficult 3: prolonged |
Clinical diagnosis | Electro-myographical diagnosis | ||
|---|---|---|---|---|---|---|---|---|
|
PENT (mV) R / L (day from intubation) |
Sural SNAP (μV) R / L |
Sural SNAP velocity in m/s | ||||||
| 1 |
1.1 / - (day 3) |
7.9 / - | 56.3 | - / - | - | 0 | - | CIM |
| 2 |
1.3 / - (day 3) |
7.5 / - | 55.9 | - / - | - | 1 | - | CIP |
| 3 |
0.0 / - (day 4) |
4.0 / - | - | - / - | - | 1 | Re-admitted for ICUAW | CIP |
| 4 |
1.1 / - (day 5) |
13.0 / - | 44.8 |
0,6 / - (day 19) |
38 (day 26) |
3, can be explained by COPD |
ICUAW of limbs | CIM |
| 5 |
1.7 / - (day 17) |
7.0 / - | 50.4 |
1.3 / 1.7 (day 24) |
60 (day 34) |
3 | ICUAW of diaphragm | Normal |
| 6 |
0.8 / 0.3 (day 9) |
- / - | - | - / - | - | 1 | - | Possible CIP/CIM but no SNAP |
| 7 |
0.9 / 0.9 (day 5) |
0.0 / 0.0 | - | - / - |
45 (day 17) |
3 | ICUAW of limbs and diaphragm | CIP, CIM |
| 8 |
0.2 / 0.5 (day 7) |
0.0 / - | - |
0.4 / - (day 14) |
- | 0 | - | CIP |
| 9 |
2.2 / - (day 4) |
0.0 / - | - |
1.4 / 0.7 (day 7) |
27 (day 20) |
3, can be explained by COPD |
ICUAW of limbs | CIP |
| 10 |
3.0 / 2.5 (day 3) |
- / - | - |
1.4 / 1.2 (day 7) |
- | 2 | ICUAW of diaphragm | Possible CIP/CIM but no SNAP |
| 11 |
0.7 / 0.6 (day 9) |
- / - | - |
0.6 / 1.7 (day 16) |
33 (day 13) |
2, can be explained by COPD |
ICUAW of limbs | Possible CIP/CIM but no SNAP |
| 12 |
0.5 / 0.6 (day 4) |
- / - | - | - / - |
59 (day 4) |
2 | ICUAW of diaphragm | Possible CIP/CIM but no SNAP |
| 13 |
2.1 / 2.4 (day 7) |
- / - | - | - / - | - | 2 | ICUAW of diaphragm | Normal |
| 14 |
1.3 / 1.4 (day 4) |
3.8 / 0.0 | 61.4 | - / - | - | 2 | ICUAW of diaphragm | CIP |
| 15 |
0.3 / - (day 4) |
0.0 / 1.5 | - |
0.1 / 0.4 (day 8) |
18 (day 14) |
1 | ICUAW of limbs | CIP |
| 16 |
0.0 (day 4) |
- / - | - | - / - | - | 0 | - | Possible CIP/CIM but no SNAP |
| 17 |
0.7 / 2.6 (day 7) |
7.3 / - | 74.1 | - / - |
38 (day 8) |
1 | ICUAW of limbs | CIM |
| 18 |
1.1 / 1.7 (day 3) |
- / - | - |
2.2 / 1.8 (day 7) |
- |
3, can be explained by COPD |
- | Possible CIP/CIM but no SNAP |