Table 1

Suggested Indices Of Severity Of Airway Obstruction

Physical findings
Pursed lip breathing

Intercostal retraction (Hoover Sign)

Accessory muscle use

Cyanosis

Hoover's sign?


Laboratory Parameters
Pulmonary function (FEV1 and FEV1/FVC)

Peak Expiratory Flow Rate

Hypoxemia

Johnston et al. Clinical and Molecular Allergy 2008 6:8   doi:10.1186/1476-7961-6-8