TABLE 2

Univariate logistic regression analysis of CPET parameters for residual PH

ParameterOR95% CIp-value
Peak load <80% predicted4.0231.434–11.2830.008
Peak VO2 <80% predicted5.3861.813–16.0010.002
VO2/WR <8.4 mL·min−1·W−113.4174.558–39.491<0.001
O2 pulse <80% predicted3.1541.260–7.8910.014
PETCO2 peak exercise <4.0 kPa2.6671.097–6.4840.030
VE/VCO2 AT ≥34.04.7881.866–12.2900.001
SpO2 peak exercise ≤94%1.9200.771–4.7810.161

AT: anaerobic threshold; CPET: cardiopulmonary exercise testing; PETCO2: end-tidal carbon dioxide partial pressure; PH: pulmonary hypertension; VE/VCO2: ventilatory equivalent for carbon dioxide; VO2: oxygen consumption; SpO2: peripheral oxygen saturation; WR: work rate.