Table 4 Changes in the electromyographic activity (EMG) of the Alae nasi, the parasternal intercostal muscles and the diaphragm between the initiation and end of spontaneous breathing trial
Total (n = 31) | Success (n = 17) | Failure (n = 14) | p | |
|---|---|---|---|---|
Alae nasi | ||||
EMGmax | 1.02 (0.94–1.25) | 0.98 (0.77–1.10) | 1.24 (0.94–1.60) | 0.010 |
EMGauc | 1.07 (0.66–1.44) | 0.93 (0.60–1.11) | 1.44 (0.91–2.40) | 0.015 |
Parasternal intercostal muscles | ||||
EMGmax | 0.99 (0.87–1.01) | 1.00 (0.98–1.01) | 0.97 (0.83–1.01) | 0.426 |
EMGauc | 1.12 (0.90–1.69) | 1.12 (1.04–1.25) | 1.03 (0.71–1.78) | 0.855 |
Diaphragm | ||||
EMGmax | 1.24 (0.80–2.06) | 0.84 (0.60–1.57) | 1.87 (1.19–2.92) | 0.008 |
EMGauc | 1.28 (0.98–1.81) | 1.12 (0.79–1.70) | 1.65 (1.47–2.93) | 0.125 |
Alae nasi/diaphragm ratio | ||||
EMGmax | 0.79 (0.54–1.22) | 0.87 (0.58–1.52) | 0.55 (0.45–0.99) | 0.039 |
EMGauc | 0.76 (0.49–1.04) | 0.72 (0.43–0.93) | 0.68 (0.23–0.96) | 0.812 |