Analysis of Echocardiographic Wall Motion
A total of 1,445 segments from the 85 patients were included in the
study, including 540 segments with RWMA. After LDDSE in the DM group,
119 segments were classified as viable myocardium, and 64 segments were
classified as non-viable myocardium. In the non-DM group, 189 segments
were classified as viable myocardium, and 168 segments were classified
as non-viable myocardium (Table S2).
Follow-up echocardiography was performed at 1, 3, and 6 months after
PCI. Based on the ”gold standard”, 540 segments were followed up, which
365 segments classified as viable myocardium and 175 segments classified
as non-viable myocardium. Among the 183 segments followed up in the DM
group, which 117 segments were classified as viable myocardium and 66
segments were classified as non-viable myocardium. In the non-DM group,
357 segments were followed up, which 248 segments classified as viable
myocardium and 109 segments classified as non-viable myocardium (Table
S3).
Comparison with the ”gold standard” showed that the sensitivity,
specificity, and accuracy of LDDSE semi-quantitative visual assessment
for evaluating viable myocardium in the DM group were 70.09%, 43.94%,
and 60.66%, respectively. In the non-DM group, the sensitivity,
specificity, and accuracy were 55.65%, 53.21%, and 54.90%,
respectively. The DM group had higher sensitivity and accuracy compared
to the non-DM group, with statistically significant differences
(P < 0.05). However, the specificity was lower in the
DM group compared to the non-DM group, with statistically significant
differences (P < 0.05).