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. 2023 Dec 1;24:70. doi: 10.1186/s40360-023-00711-9

Table 2.

Breathing patterns generated by the breathing simulator

Breathing pattern Inspiration: Expiration (I:E) ratio Respiration rate (BPM) Tidal volume (mL) Inspiration volume (mL/min)
ISO 27427 1:1 15 500 3,750
Normal adult 1:2 15 500 2,500
Asthma adult 1:2.5 25 290 2,071
Normal child 1:2 20 200 1,333
Asthma child 1:4 23 200 920

The average volume error of the breathing patterns was 1.46 ± 0.73 %