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Table 2 Correlation between CFR and parameters of LV function and perfusion

From: Non-invasive evaluation of myocardial reperfusion by transthoracic Doppler echocardiography and single-photon emission computed tomography in patients with anterior acute myocardial infarction

Parameters of LV function and perfusion Correlation coefficient (r)
72 hours after the reperfusion
TPD at stress (%) -0.492**
TPD at rest (%) -0.541**
LVEF (%) (3D) 0.267
LV ESV (ml) (3D) -0.219
LV EDV (ml) (3D) -0.314*
WMSI at rest -0.295
WMSI LDDE -0.552**
At 5 months follow-up
CFR 0.505**
TPD at stress (%) -0.636**
TPD at rest (%) -0.620**
LVEF (%) (3D) 0.373*
LV ESV (ml) (3D) -0.363*
LV EDV (ml) (3D) -0.349*
WMSI at rest -0.567**
WMSI LDDE -0.671**
Contractile reserve (difference ≥ 0.25 of WMSI)
WMSI at rest (AMI) - WMSI at rest (at follow-up) 0.559**
WMSI at rest (AMI) - WMSI LDDE (AMI) 0.626**
WMSI at rest (AMI) - WMSI LDDE (at follow-up) 0.680**
  1. *p < 0.05; **p < 0.001
  2. CFR - coronary flow reserve; LV- left ventricular; LVEF - left ventricular ejection fraction; LV ESV - left ventricular end-systolic volume; LV EDV - left ventricular end-diastolic volume; 3D - three-dimensional echocardiography; WMSI - wall motion score index; WMSI LDDE - wall motion score index at low-dose dobutamine echocardiography; WMSI at rest - WMSI LDDE - difference ≥ 0.25 between WMSI at rest and WMSI at LDDE indicates the presence of contractile reserve; WMSI at rest (AMI) - WMSI at rest (at follow-up) - difference of WMSI ≥ 0.25 indicates the myocardial viability; TPD% - total perfusion defect (%)