Cardiopulmonary exercise test (CPET) determinants of prognosis in risk assessment
| CPET parameters | Low Risk (<5%) | Intermediate risk (5–10%) | High risk (>10%) |
| Peak V′O2 mL·kg−1·min−1 | >15 | 11–15 | <11 |
| Peak V′O2 % predicted | >65 | 65–35 | <35 |
| V′E/V′CO2 slope | <36 | 36–45 | >45 |
V′O2: oxygen uptake; V′E : minute ventilation; V′CO2: carbon dioxide production; V′E/V′CO2 slope: slope of the relationship between V′E and V′CO2.