Skip to main content
. 2021 Jul 1;131(2):836–857. doi: 10.1152/japplphysiol.00216.2021

Table 2.

Total changes that occurred during the first 15 min upon return to room air

Parameter SHAM SCGX
Number of mice 14 14
Frequency, % +41.1 ± 10.8 (14) +30.9 ± 5.5 (14)
 +Freq, % +58.8. ± 8.9 (10) +33.5 ± 5.0* (13)
 −Freq, % −3.3 ± 0.5 (4) −2.9 (1)
Tidal volume (TV), % +39.2 ± 8.0 (14) +28.0 ± 6.3 (14)
 +TV, % +43.4 ± 7.1 (13) +33.3 ± 5.6 (12)
 −TV, % −15.8 (1) −2.9 ± 0.1 (2)
Minute ventilation, % +113 ± 26.9 +79.7 ± 14.1 (14)
 +MV, % +123.2 ± 25.9 (13) +79.7 ± 14.1 (14)
 −MV, % −20 (1) None
Inspiratory time (Ti), % −30.4 ± 5.3 (14) −30.3 ± 3.1 (14)
Expiratory time (Te), % −4.1 ± 6.0 (14) +8.6 ± 4.9 (14)
 +Te, % +16.5 ± 2.2 (6) +17.0 ± 3.7 (10)
 −Te, % −19.5 ± 4.2 (8) −12.3 ± 2.3 (4)
Ti/Te, % −25.9 ± 2.3 (14) −33.3 ± 1.9* (14)
Ti/(Ti + Te), % −19.0 ± 1.7 (14) −25.1 ± 1.5* (14)
End inspiratory pause (EIP), % −8.3 ± 2.7 (14) −12.1 ± 2.5 (14)
End expiratory pause (EEP), % +185 ± 55 (14) +259 ± 66 (14)
Inspiratory drive (TV/Ti), % +143 ± 29 (14) +116 ± 16 (14)
Expiratory drive (TV/Te), % +77.8 ± 21.4 (14) +44.6 ± 11.8 (14)
 +TV/Te, % +100.9 ± 19.9 (11) +53.2 ± 11.2* (12)
 −TV/Te, % −7.2 ± 3.6 (3) −6.9 ± 1.8 (2)
Peak expiratory flow (PEF), % +122 ± 18 (14) +83 ± 16 (14)
PIF/PEF, % +11.1 ± 5.6 (14) +25.8 ± 6.3 (14)
 +PIF/PEF, % +18.2 ± 4.7 (11) +34.6 ± 4.8* (11)
 −PIF/PEF, % −15.0 ± 1.6 (3) −6.6 ± 1.5 (3)
Expiratory flow at 50% exhaled TV (EF50), % +117 ± 27 (14) +80 ± 17 (14)
Relaxation Time (RT), % −5.3 ± 5.5 (14) +15.0 ± 4.6* (14)
 +RT, % +12.1 ± 3.3 (8) +24.5 ± 2.1* (10)
 −RT, % −16.0 ± 3.9 (6) −8.9 ± 2.1 (4)
Rate of achieving PEF (Rpef), % +14.5 ± 10.7 (14) +19.6 ± 13.9 (14)
 +Rpef, % +40.4 ± 6.8 (8) +69.9 ± 9.6* (6)
 −Rpef, % −20.1 ± 3.3 (6) −18.0 ± 4.8 (8)
Noneupneic breathing index (NEBI), % +315 ± 84 (14) +280 ± 52 (14)
(NEBI/frequency) x 100, % +175 ± 41 (14) +194 ± 37 (14)
Apneic pause (Te/RT)-1, % +5.3 ± 4.8 (14) −4.9 ± 6.1 (14)
 +(Te/RT) - 1, % +19.1 ± 3.7 (7) +25.9 ± 4.1 (4)
 −(Te/RT) - 1, % −8.6 ± 1.9 (7) −17.2 ± 2.3* (10)

Values are means ± SE; (n), number of mice in the subgroups for Te, relaxation time (RT), relative rate of achieving peak expiratory flow (Rpef), and (Te/RT)-1. *P < 0.05, superior cervical ganglionectomy (SCGX) vs. sham operated (SHAM).