Impact of Total Ischemic Time on the Recovery of Regional Wall Motion Abnormality after STEMI in the Modern Reperfusion Era

Table 3

Variables associated with a decrease in the WMSI value among patients with TITs of 180 minutes or less (N = 74).

	ΔWMSI↓(n = 55)	ΔWMSI↑(n = 19)	value
Age	61 ± 14	61 ± 11	0.971
Male sex	44 (80)	14 (74)	0.564
Body mass index	24.2 ± 2.8	25.2 ± 3.1	0.188
Diabetes	14 (26)	7 (37)	0.343
Hypertension	27 (49)	12 (63)	0.290
Smoking ever	26 (47)	6 (32)	0.234
STEMI, anterior	29 (53)	7 (37)	0.232
Total ischemic time, minutes	106 (81–124)	133 (100–151)	0.018
CK-MB	134 ± 103	168 ± 113	0.244
LV end-diastolic dimension, mm	47.9 ± 3.9	49.1 ± 5.7	0.301

Values are presented as mean ± standard deviation, n (%), or median (interquartile range). CK-MB, creatine kinase-MB fraction; LV, left ventricle; STEMI, ST-segment elevation myocardial infarction. Statistical significance was defined as by Welch’s t-test (continuous variables) or the chi-squared test (categorical variables). The values in bold indicate statistical significance ().