From: Diagnostic and prognostic value of ventilatory power in pulmonary hypertension
Variable | Normal control (n = 177) | PH | P value# | ||
---|---|---|---|---|---|
Total (n = 502) | Non-CW (n = 310) | CW (n = 192) | |||
Echocardiography | |||||
LA, mm | 33 (30, 37) | 30 (28, 33)** | 30 (28, 33) | 30 (27, 33) | 0.625 |
EF, % | 65 (60, 68) | 63.0 (60.0, 67.1) | 63.5 (60.0, 67.2) | 62.0 (60.0, 67.4) | 0.231 |
RVED/LVED | 0.56 (0.49, 0.66) | 0.85 (0.68, 1.06)** | 0.83 (0.67, 1.00) | 0.91 (0.73, 1.10) | 0.001 |
TRV, m/s | 2.90 (2.65, 3.21 | 4.40 ± 0.60** | 4.40 ± 0.61 | 4.40 ± 0.57 | 0.879 |
RHC | |||||
SvO2, % | 76.6 (73.2, 80.0) | 69.2 ± 6.7** | 70.2 ± 6.5 | 67.6 ± 6.6 | < 0.001 |
mRAP, mmHg | 3 (1, 5) | 5 (2, 8)** | 5.0 (2.0, 7.5) | 5 (3, 8) | 0.073 |
mPAP, mmHg | 17 (14, 20) | 51(44, 60)** | 51 (43, 60) | 52 (45, 62) | 0.151 |
PAWP, mmHg | 7 (2, 10) | 7 (5, 10) | 7.5 (5.0, 10.0) | 7 (4, 10) | 0.283 |
CI, L/min/m2 | 3.50 (2.96, 4.44) | 2.82 (2.36, 3.39)** | 2.87 (2.43, 3.48) | 2.70 (2.26, 3.23) | 0.008 |
PVR, wood units | 1.66 (1.02, 2.47) | 10.9 (7.8, 14.0)** | 10.5 (7.4, 13.7) | 11.7 (8.5, 14.7) | 0.003 |
CPET | |||||
FVC/prediction, % | 90 ± 17 | 86 (76, 94)** | 86 (77, 94) | 85 (75, 95) | 0.394 |
FEV1/prediction, % | 83.1 ± 17.6 | 78 (69, 88)** | 79 (69, 88) | 77.5 (69.0, 87.0) | 0.547 |
FEV1/FVC | 0.79 (0.73, 0.84) | 0.78 (0.73, 0.83) | 0.78 (0.73, 0.83) | 0.78 (0.73, 0.83) | 0.375 |
Workload@Peak, watt | 92 (71, 115) | 66 (51, 87)** | 67.0 (52.5, 90.5) | 63.5 (49, 83) | 0.141 |
VO2@Rest, mL/min/kg | 4.69 (4.19, 5.20) | 4.79 (4.20, 5.25) | 4.79 (4.16, 5.30) | 4.79 (4.30, 5.21) | 0.774 |
VO2@Peak, mL/min/kg | 18 ± 5 | 12.1 (10.2, 14.8)** | 12.5 (10.4, 15.4) | 11.5 (9.5, 14.1) | 0.003 |
HR@Rest, beat/min | 78 (68, 89) | 81.0 (72.8, 90.0) | 81.0 (72.8, 90.0) | 80.5 (72.3, 90.8) | 0.910 |
HR@Peak, beat/min | 136.8 ± 24.2 | 137 (120, 154) | 139 (121, 155) | 134.0 (118.3, 153.0) | 0.165 |
SBP@Rest, mmHg | 113.4 ± 16.9 | 105.0 (96.0, 116.8)** | 106 (96, 117) | 104 (95, 114) | 0.126 |
SBP@Peak, mmHg | 147.8 ± 32.3 | 131 (111, 153)** | 135 (114, 154) | 127.0 (108.0, 149.8) | 0.030 |
DBP@Rest, mmHg | 77.5 (69.0, 90.3) | 72 (65, 78)** | 72 (65, 79) | 71 (63, 78) | 0.343 |
DBP@Peak, mmHg | 85 (73.3, 102.8) | 82 (70, 98) | 82 (72, 99) | 81.5 (69.0, 96.8) | 0.381 |
VO2/HR@Rest, mL/beat | 3.70 (3.0, 4.40) | 3.60 (3.00, 4.30) | 3.60 (3.00, 4.30) | 3.55 (3.03, 4.20) | 0.715 |
VO2/HR@Peak, mL/beat | 8.00 (6.75, 9.35) | 5.50 (4.60, 6.63)** | 5.50 (4.80, 6.80) | 5.40 (4.33, 6.40) | 0.016 |
PETCO2@Rest, mmHg | 33 (31, 36) | 27 (24, 30)** | 27 (24, 30) | 27 (24, 30) | 0.430 |
PETCO2@Peak, mmHg | 37.0 (33.5, 41.0) | 24 (19, 27)** | 24 (20, 28) | 22.5 (19.0, 26.0) | 0.001 |
VE/VCO2 slope | 33.3 (30.7, 36.5) | 44.1 (37.9, 51.1)** | 43.9 (37.2, 50.7) | 45.2 (39.1, 52.9) | 0.054 |
Ventilatory power, mmHg | 4.66 (3.66, 5.49) | 3.00 (2.25, 3.84)** | 3.12 (2.33, 4.04) | 2.73 (2.08, 3.58) | 0.002 |