Upper level: b449  Functions of the respiratory system, other specified and unspecified

b440  Respiration functions

Functions of inhaling air into the lungs, the exchange of gases between air and blood, and exhaling air.

Inclusions: functions of respiration rate, rhythm and depth; impairments such as apnoea, hyperventilation, irregular respiration, paradoxical respiration, and brochial spasm, and as in pulmonary emphysema

Exclusions: respiratory muscle functions (b445); additional respiratory functions (b450); exercise tolerance functions (b455)


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