组别

CO (L/min)

T0

T1

T2

T3

T4

P组(n = 40)

7.1 ± 0.2

6.4 ± 0.5b

5.5 ± 0.5b

5.1 ± 0.5b

4.9 ± 0.9b

R组(n = 40)

7.0 ± 0.3

6.9 ± 0.3a

6.7 ± 0.3a

6.7 ± 0.2a

6.6 ± 0.2a