Table 2

 Correlation between serial measurements of myocardial performance index (MPI) and left ventricular functional variables

MPI
Just after PCIDay 2Day 7
rp Valuerp Valuerp Value
A-WMSI, anterior wall motion score index; CK, creatine kinase; CK-MB, creatine kinase MB isoenzyme; LVEDP, left ventricular end diastolic pressure; LVEDV, left ventricular end diastolic volume; LVEF, left ventricular ejection fraction.
Peak CK0.110.560.74<0.00010.290.11
Peak CK-MB0.0040.980.71<0.00010.160.39
Percentage change in A-WMSI after PCI
    After 1 week0.180.330.44<0.020.230.20
    After 6 months0.110.600.62<0.0020.300.14
Percentage change in LVEDP after PCI
    After 1 week0.260.160.38<0.040.070.71
    After 6 months0.180.410.160.450.140.52
Percentage change in LVEF after PCI
    After 1 week−0.240.19−0.52<0.003−0.320.07
    After 6 months−0.220.31−0.64<0.0008−0.290.16
Percentage change in LVEDV after PCI
    After 1 week0.170.370.51<0.0030.240.18
    After 6 months0.030.870.41<0.050.160.47