Table 4: Myocardial Perfusion Reserve Index (MPRI) by Agent Received.

MPRI

Groups

Adenosine

(99 cases, 20 controls)

Regadenoson

(40 cases, 20 controls)

p-value

Unadjusted

Cases

1.73 ± 0.38

2.27 ± 0.59

<0.0001

Controls

2.27 ± 0.33

2.38 ± 0.44

0.36

Adjusted for stress RPP*

Cases

1.73 ± 0.05

2.27 ± 0.07

<0.0001

Adjusted for invasive CFR*

Cases

1.74 ± 0.04

2.30 ± 0.07

<0.0001

*mean ± SE

CFR= coronary flow reserve to intracoronary adenosine, HR= heart rate, MPRI= myocardial perfusion reserve index, RPP= rate-pressure product.