Dyspnea, wheezing, and cough (+/- sputum production)
Prolonged expiration
Accessory muscle use
Sign of impending ventilatory failure:
Paradoxical respiration (chest deflation and abdominal protrusion during inspiration)
Altered mental status
"Silent chest"
Low peak flows
Cyanosis is uncommon (respiratory alkalosis -> left shift of the oxyhemoglobin dissociation curve)
Paradoxical respiration (chest deflation and abdominal protrusion during inspiration)
Altered mental status
"Silent chest"
Acute asthma exacerbation
Pulmonary
COPD exacerbation
Airway obstruction
Acute chest syndrome
Anaphylaxis
Acute dyspnea
Angioedema