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Table 3 Comparison of the parameters of LV function and perfusion in two subgroups

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 recovery

Preserved CFR (N = 19)

Impaired CFR (N = 25)

p value

72 hours after reperfusion

   

TPD at stress (%)

19.68 (12.77)

37.76 (11.59)

< 0.001

TPD at rest (%)

12.58 (1.22)

30.16 (11.32)

< 0.001

LVEF (%) (3D)

47.78 (8.99)

40.79 (7.25)

0.007

LV ESV (ml) (3D)

64.32 (22.97)

74.86 (16.11)

0.084

LV EDV (ml) (3D)

109.06 (21.90)

128.10 (24.15)

0.011

WMSI at rest

1.74 (0.29)

1.89 (0.17)

< 0.001

WMSI LDDE

1.48 (0.27)

1.80 (0.22)

< 0.001

At 5 months follow-up

   

CFR

2.61 (0.40)

2.06 (0.33)

< 0.001

TPD at stress (%)

8.74 (9.44)

28.12 (9.72)

< 0.001

TPD at rest (%)

5.26 (6.14)

23.28 (12.19)

< 0.001

LVEF (%) (3D)

49.78 (8.70)

40.36 (7.90)

0.001

LV ESV (ml) (3D)

59.28 (2.18)

80.04 (25.10)

0.006

LV EDV (ml) (3D)

113.39 (25.28)

133.72 (3.59)

0.026

WMSI at rest

1.47 (0.30)

1.81 (0.20)

< 0.001

WMSI LDDE

1.30 (0.28)

1.76 (0.25)

< 0.001

Contractile reserve (difference ≥ 0.25 of WMSI)

   

WMSI at rest (AMI) - WMSI at rest (at follow-up)

0.27 (0.19)

0.07 (0.10)

< 0.001

WMSI at rest (AMI) - WMSI LDDE (AMI)

0.25 (0.13)

0.08 (0.09)

< 0.001

WMSI at rest (AMI) - WMSI LDDE (at follow-up)

0.43 (0.20)

0.13 (0.16)

< 0.001

  1. Data are mean (SD)
  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 (%)