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Table 3 Breathing patterns generated by the respiratory simulator

From: In vitro delivery efficiencies of nebulizers for different breathing patterns

Breathing pattern Inspiration:expiration (I:E) ratio Respiration rate (bpm) Tidal volume (mL)
ISO 27427:2013 1:1 15 500
Normal adult 1:2 15 500
Asthma 1:2.5 22 290
COPD 1.3 15 500