Table 4 Signs of airway obstruction

From: Medical emergencies: the drug box, equipment and basic principles

Inability to complete sentences or speak

‘Paradoxical’ movement of chest and abdomen (‘see-saw’ respiration)

Use of accessory muscles of respiration

Blue lips and tongue (central cyanosis)

No breathing sounds (complete airway obstruction)

Stridor (inspiratory) – obstruction of larynx or above

Wheeze (expiratory) – obstruction of lower airways for example, asthma or chronic obstructive pulmonary disease

Gurgling – suggests liquid or semi-solid material in the upper airway

Snoring – the pharynx is partly occluded by the soft palate or tongue