Skip to main content

Table 3 CPET variables in different causes of dyspnea

From: Cardiopulmonary exercise testing and echocardiographic exam: an useful interaction

ConditionVariables
CardiovascularPeak VO2 < 80% of the predicted
Low ventilatory threshold (VT)
Chronotropic incompetence
Heart rate recovery ≤12 BPM after the first minute
PulmonaryPeak VO2 < 80% of the predicted
Low ventilatory threshold (VT)
Peak respiratory rate > 50/min
Ventilatory reserve (peak VE/MVV) < 15%
Oxygen desaturation
DeconditioningLow-normal peak VO2
Low ventilatory threshold (VT)
Absence of any other abnormal response
ObesityAbsolute VO2 greater than predicted
Indexed peak VO2 lower than predicted
Increased VO2/work slope
Muscle diseaseSubmaximal cardiac and respiratory response
Low ventilatory threshold (VT)
Elevate lactate at submaximal work