Table 3

Baseline test characteristics of exercise-related predictors for echocardiographic response 3 months after CRT implantation

PredictorAUCP valueCut-off valueMet?TotalSens (%)Spec (%)
τVO2 onset0.7190.029≤60 sYes116190
No16
τVO2 recovery0.7190.025≤60 sYes126790
No15
VO2 peak0.6320.199≥18 mL/kg/minYes125082
No18
VE/VCO2 slope0.6000.371≤40Yes228045
No8
OUES0.5770.469≥1500Yes145573
  • AUC, area under the curve; CRT, cardiac resynchronisation therapy; OUES, oxygen uptake efficiency slope; sens, sensitivity; spec, specificity; VE/VCO2 slope, minute ventilation for CO2 elimination; τVO2, time constant of oxygen uptake.