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Table 2 The effect of microvascular obstruction (MVO) on infarct and remote zone strain

From: Left ventricular functional recovery of infarcted and remote myocardium after ST-segment elevation myocardial infarction (METOCARD-CNIC randomized clinical trial substudy)

 

Infarct zone circumferential strain (%)

Remote zone circumferential strain (%)

1 week

6 months

MD [95% CI]

P-value*

1 week

6 months

MD [95% CI]

P-value*

MVO (N = 117)

− 5.1 ± 8.8

−11.2 ± 7.8

−6.2 [− 7.7 to − 4.7]

< 0.001

− 19.3 ± 7.0

− 19.2 ± 3.8

0.1 [− 1.0 to 1.3]

0.828

No MVO (N = 73)

−14.2 ± 6.1

− 19.5 ± 5.1

− 5.3 [− 6.5 to − 4.1]

< 0.001

− 19.7 ± 3.4

−19.2 ± 4.2

0.5 [− 0.5 to 1.5]

0.313

MD [95% CI]

9.2 [6.9 to 11.5]

8.3 [6.5 to 10.2]

  

0.4 [−1.4 to 2.1]

0.0 [−1.2 to 1.1]

  

P-value

< 0.001

< 0.001

  

0.677

0.981

  
  1. CI confidence interval, MD mean difference, MVO microvascular obstruction
  2. *the P-values for the strain difference between 6 months and 1 week
  3. †the P-values for the strain difference between the group