Table 2. Correlation of AP activity to 13C5-adenosine production pre-operation and prior to separation from cardiopulmonary bypass.

	Pre-operative	Rewarming
	r (p-value)
Low concentration 13C-AMP
Without CD73 Inhibition	0.70 (< 0.0001)	0.48 (<0.05)
With CD73 Inhibition	0.82 (< 0.0001)	0.80 (< 0.0001)
High concentration 13C-AMP
Without CD73 Inhibition	0.87 (< 0.0001)	0.76 (< 0.0001)
With CD73 Inhibition	0.88 (< 0.0001)	0.70 (0.0001)