|
Indices used to predict success for weaning and ventilator discontinuation |
|
| Index |
Threshold values |
|
|
|
| Ventilatory drive |
|
| Minute ventilation (VE) |
<10 l/minute |
| P0.1/PImax |
<0.3 |
| Respiratory muscle strength |
|
| Maximum inspiratory pressure (PImax) |
< -20 to -30 cmH2O |
| Ventilatory mechanics |
|
| Tidal volume (VT) |
>5 ml/kg |
| Breathing frequency (f) |
<30–35 breaths/minute |
| Rapid shallow breathing (f/VT) |
<105 breaths/minute/ml |
| Others |
|
| Integrative index (CROP) |
>13 ml/breaths/minute |
|
P0.1/PImax = ratio of airway occlusion pressure 0.1 s after the onset of inspiratory effort to PImax. | |
El-Khatib and Bou-Khalil Critical Care 2008 12:221 doi:10.1186/cc6959 |
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