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Table 5 Segmental analysis of wall motion score index (WMSI) pre and post PCI and transmurality post PCI

From: Longitudinal peak strain detects a smaller risk area than visual assessment of wall motion in acute myocardial infarction

PrePCI strain

Normal

Abnormal

Follow-up strain

Deteriorated

Unchanged

Improved

Deteriorated

Unchanged

Improved

n

44

162

55

2

52

75

Strain (mean ± SD)

      

   Preop

-21 ± 5

-17 ± 4

-15 ± 3

-1 ± 4

-6 ± 5

-4 ± 6

   Postop

-12 ± 6

-17 ± 4

-24 ± 4

7 ± 6

-8 ± 5

-16 ± 6

   Post-pre-difference

-6 ± 3

-6 ± 3

-7 ± 4

-1 ± 1

-3 ± 3

-4 ± 4

WMSI (mean ± SD)

      

   Preop

1.4 ± 0.5

1.3 ± 0.5

1.4 ± 0.4

2.6 ± 0.1

1.9 ± 0.7

2.1 ± 0.8

   Postop

1.2 ± 0.3

1.3 ± 0.4

1.3 ± 0.4

2.6 ± 0.1

1.7 ± 0.7

1.6 ± 0.6

   Post-pre-difference

1.2 ± 0.4

1.1 ± 0.4

1.0 ± 0.4

1.0 ± 0.0

1.1 ± 0.6

1.4 ± 0.5

WMSI (segments; n (%))

      

   Preop

      

Normal

26 (59)

83 (51)

25 (45)

0 (0)

10 (19)

15 (20)

Abnormal

18 (41)

79 (49)

30 (55)

2 (100)

42 (81)

60 (80)

   Postop

      

Deteriorated

1 (2)

8 (5)

5 (9)

0 (0)

7 (13)

1 (1)

Unchanged

34 (77)

136 (84)

45 (82)

2 (100)

32 (62)

44 (59)

Improved

9 (20)

18 (11)

5 (9)

0 (0)

13 (25)

30 (40)

Transmurality (segments; n (%))

      

   Postop

      

Normal (<1%)

40 (91)

130 (80)

44 (80)

1 (50)

27 (52)

41 (55)

≥ 1%

4 (9)

32 (20)

11 (20)

1 (50)

25 (48)

34 (45)

> 50%

1 (2)

11 (7)

3 (5)

1 (50)

16 (31)

18 (24)

  1. Segmental analysis of wall motion score index (WMSI) pre and post PCI and infarction transmurality post PCI calculated for the different outcomes of strain (ε) pre-PCI, in turn related to the different outcomes postoperatively (deteriorated, unchanged and improved).