Table 2.
Signs and symptoms of acute respiratory failure Worsening of clinical parameters after bronchodilator treatment SatO2 < 92% after bronchodilator treatment PEF < 60% predicted after bronchodilator treatment |
|
Concomitant complications (pneumothorax, atelectasies, pneumonia) | |
Severe asthma itself, irrespective of worsening; History of previous severe life-threatening asthma episodes, or previous admission to ICU |