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Table 3 Regional analysis of wall motion score index

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

   Transmurality post-PCI  
   Normal (<1%) 1-24% 25-50% >50% p-value*
n = number of walls   50 28 11 15  
Transmurality (%; mean)       
   Postop n = 104 0.0 ± 0.1 9.4 ± 6.5 36.3 ± 7.4 64.7 ± 9.9 -
WMSI (mean ± SD)       
   Preop n = 102 1.3 ± 0.4 1.7 ± 0.3 1.9 ± 0.2 2.2 ± 0.5 p < 0.001
   Postop n = 104 1.2 ± 0.3 1.4 ± 0.4 1.6 ± 0.3 1.9 ± 0.2 p < 0.001
   Δ n = 102 -0.1 ± 0.4 -0.3 ± 0.4 -0.3 ± 0.4 -0.3 ± 0.6 0.330
Strain (mean ± SD)       
   Preop n = 102 -15.3 ± 4.9 -10.5 ± 3.6 -10.9 ± 4.5 -8.4 ± 6.3 p < 0.001
   Postop n = 104 -17.3 ± 4.7 -14.3 ± 4.2 -14.9 ± 4.1 -12.3 ± 4.2 p < 0.001
   Δ n = 102 -2.0 ± 5.8 -4.2 ± 4.6 -4.0 ± 3.7 -4.0 ± 5.0 0.205
MAM (mm; mean ± SD)       
   Preop n = 98 11.4 ± 2.9 9.4 ± 2.9 10.7 ± 3.0 9.3 ± 2.9 0.027
   Postop n = 103 12.2 ± 2.6 10.1 ± 2.1 11.6 ± 2.1 9.2 ± 2.0 p < 0.001
   Δ n = 97 0.8 ± 2.9 0.6 ± 2.8 1.4 ± 3.0 0.2 ± 2.2 0.706
  1. Regional (septal, anterior, lateral and inferior wall) analysis of wall motion score index (WMSI), strain (ε) and mitral annulus movement pre and post PCI calculated for the different outcomes of postoperative transmurality.
  2. Footnotes: *; significance levels for the difference between normal (<1%) and >50% transmurality