Table 3.

Ventilation and Gas Exchange Measures at the Second Minute of Recovery for CTL Participants and Patients With HF

	Baseline	RCO	RCO+CO2
HR, bpm
CTL	78.8±4.3	77.2±3.3	75.5±3.3
HF	79.6±4.8	87.0±5.5*†	85.3±5.0*†
SBP, mm Hg
CTL	139.3±6.3	145.5±3.8	145.3±5.1
HF	132.0±6.3	144.7±6.1	146.7±7.8
DBP, mm Hg
CTL	77.7±2.7	88.3±3.8†	89.1±4.1†
HF	77.8±4.2	88.0±3.3†	88.7±3.6†
VE, L/min
CTL	21.8±1.7	15.2±1.1†	20.0±2.2‡
HF	19.6±1.1*	20.1±1.5*	23.1±1.5*†
VT, mL/min
CTL	1221.8±94.2	958.2±90.5	1095±51.1
HF	1111.8±136.3*	947.3±57.4*	1123.6±85.3*
RR, breaths/min
CTL	16.2±1.1	15.3±1.8	18.18±1.7
HF	18.9±1.3	21.0±1.8	20.6±1.0
PETCO2, mm Hg
CTL	36.4±1.2	33.2±1.5†	38.4±1.2‡
HF	33.8±1.4*	30.2±1.0†	34.8±1.2*‡
VE/VCO2
CTL	32.2±1.5	40.8±2.9	72.8±7.0†‡
HF	36.5±1.6*	43.6±2.9*	65.8±6.9*†‡
VT/TI
CTL	0.85±0.1	0.62±0.1	0.84±0.1
HF	0.87±0.08*	0.92±0.08*	0.97±0.08*

Data are presented as mean±SEM. DBP indicates diastolic blood pressure; V_T, tidal volume; RR, respiratory rate; T_I, inspiratory time. V_T/T_I represents an index of ventilatory drive.

^*P<0.05 compared with CTL.

^†P<0.05 compared with baseline after Bonferroni correction.

^‡P<0.05 compared with RCO after Bonferroni correction.