Exercise pulmonary hypertension group | Non-exercise pulmonary hypertension group | p-value | |
Subjects | 116 | 133 | |
Rest after leg raise | |||
HR beats·min−1 | 71±11 | 69±11 | 0.242 |
Systolic BP mmHg | 149±24 | 141±21 | 0.005 |
Diastolic BP mmHg | 73±13 | 71±10 | 0.287 |
Mean BP mmHg | 102±18 | 97±13 | 0.020 |
Systolic PAP mmHg | 43±10 | 39±9 | <0.001 |
Diastolic PAP mmHg | 10±6 | 10±5 | 0.186 |
Mean PAP mmHg | 25±6 | 23±5 | 0.002 |
PAWP mmHg | 11±4 | 11±4 | 0.995 |
CO L·min−1 | 4.9±1.7 | 5.7±1.9 | 0.002 |
PVR WU | 3.2±1.7 | 2.3±1.3 | <0.001 |
PaO2 mmHg | 73±11 | 77±12 | 0.011 |
PaCO2 mmHg | 41±5 | 41±4 | 0.730 |
SaO2 % | 94±3 | 95±3 | 0.025 |
SvO2 % | 68±5 | 71±5 | 0.002 |
Ca−vO2 mL·dL−1 | 4.4±0.9 | 4.1±0.8 | 0.008 |
V′O2 mL·min−1 | 206±51 | 224±68 | 0.024 |
V′CO2 mL·min−1 | 172±45 | 185±64 | 0.077 |
R | 0.83±0.08 | 0.81±0.08 | 0.227 |
V′E L·min−1 | 8.2±1.9 | 8.3±2.3 | 0.733 |
V′E/V′O2 | 42.0±11.4 | 39.1±10.2 | 0.034 |
V′E/V′CO2 | 50.8±11.8 | 48.0±11.2 | 0.057 |
Anaerobic threshold | |||
HR beats·min−1 | 104±17 | 104±15 | 0.917 |
Mean PAP mmHg | 40±8 | 34±6 | <0.001 |
PAWP mmHg | 16±5 | 15±4 | 0.067 |
CO L·min−1 | 8.2±2.1 | 10.9±3.2 | <0.001 |
PVR WU | 3.1±1.3 | 1.9±1.0 | <0.001 |
PaO2 mmHg | 67±11 | 70±12 | 0.041 |
PaCO2 mmHg | 40±4 | 41±4 | 0.270 |
SaO2 % | 92±4 | 93±4 | 0.087 |
SvO2 % | 48±8 | 52±6 | <0.001 |
R | 0.95±0.20 | 0.95±0.08 | 0.745 |
V′E L·min−1 | 23.6±7.0 | 26.1±7.4 | 0.008 |
V′E/V′CO2 | 42.7±8.3 | 39.3±7.1 | 0.001 |
Peak | |||
Work rate watts | 67±21 | 80±29 | <0.001 |
HR beats·min−1 | 121±19 | 125±18 | 0.103 |
Systolic BP mmHg | 188±41 | 181±33 | 0.172 |
Diastolic BP mmHg | 86±15 | 84±16 | 0.444 |
Mean BP mmHg | 124±20 | 120±20 | 0.159 |
Systolic PAP mmHg | 73±13 | 63±11 | <0.001 |
Diastolic PAP mmHg | 19±6 | 14±6 | <0.001 |
Mean PAP mmHg | 44±8 | 37±7 | <0.001 |
PAWP mmHg | 16±5 | 15±5 | 0.123 |
CO L·min−1 | 9.0±2.4 | 12.6±3.8 | <0.001 |
PVR WU | 3.3±1.2 | 1.9±0.8 | <0.001 |
PaO2 mmHg | 64±11 | 68±11 | 0.023 |
PaCO2 mmHg | 40±5 | 40±4 | 0.680 |
SaO2 % | 91±4 | 92±4 | 0.285 |
SvO2 % | 41±7 | 44±7 | 0.005 |
Ca−vO2 mL·dL−1 | 8.5±1.7 | 8.0±1.7 | 0.030 |
V′O2 mL·min−1 | 775±268 | 1014±382 | <0.001 |
V′CO2 mL·min−1 | 830±312 | 1083±436 | <0.001 |
R | 1.06±0.10 | 1.06±0.11 | 0.810 |
V′E L·min−1 | 34.7±10.9 | 40.9±13.7 | <0.001 |
V′E/V′O2 | 46.5±8.8 | 42.0±7.9 | <0.001 |
V′E/V′CO2 | 44.0±8.4 | 39.8±6.7 | <0.001 |
Peak V′O2 mL·kg−1·min−1 | 13.5±3.8 | 16.6±4.7 | <0.001 |
V′E versus V′CO2 slope | 39.7±9.0 | 35.2±7.5 | <0.001 |
Data are presented as n or mean±sd, unless otherwise stated. HR: heart rate; BP: blood pressure; PAP: pulmonary arterial pressure; PAWP: pulmonary arterial wedge pressure; CO: cardiac output; PVR: pulmonary vascular resistance; WU: Wood Units; PaO2: partial pressure of arterial oxygen; PaCO2: partial pressure of arterial carbon dioxide; SaO2: arterial oxygen saturation; SvO2: mixed venous oxygen saturation; Ca−vO2: arterial mixed venous oxygen content difference; V′O2: oxygen consumption; V′CO2: carbon dioxide output; R: respiratory exchange ratio; V′E: minute ventilation.