Table 2.

Cardiopulmonary exercise test score (modified from Ref # 23)

Variable	Value	Points
VE/VCO2slope	≥34	7
HR recovery	≤6	5a
O2 uptake efficiency slope	≤1.4	2
Peak VO2	< 14 mL/Kg/min	2

Score > 15 points: annual mortality rate 12.2%

^a2 point if undergoing beta-blocker therapy