Relationship between the ST-Segment Resolution and Microvascular Dysfunction in Patients Who Underwent Primary Percutaneous Coronary Intervention

Table 2

Comparison of LAD and non-LAD infarctions.

	LAD infarction ()			Non-LAD infarction ()
	Incomplete STR ()	Complete STR ()	value	Incomplete STR ()	Complete STR ()	value
ST-segment resolution (%)	24.2 ± 18.4	78.1 ± 15.9	<0.001	29.5 ± 40.0	90.3 ± 14.3	0.013
Ejection fraction (%)	43.4 ± 5.0	51.3 ± 13.6	0.015	51.6 ± 11.5	56.8 ± 7.8	0.183
RWMSI	1.6 ± 0.4	1.4 ± 0.3	0.145	1.2 ± 0.2	1.1 ± 0.1	0.133
Peak CK-MB (IU/L)	236.8 ± 130.9	197.3 ± 147.0	0.382	156.3 ± 114.5	166.8 ± 116.9	0.843
Peak troponin-I (ng/ml)	60.5 ± 28.2	49.7 ± 34.5	0.281	47.2 ± 32.1	49.6 ± 28.5	0.852
TMP grade after PCI
1, n (%)	1 (5.9)	0	0.425	0	1 (3.7)	0.818
2, n (%)	9 (52.9)	10 (43.5)	0.554	2 (33.3)	8 (29.6)	0.858
3, n (%)	7 (41.2)	13 (56.5)	0.337	4 (66.7)	18 (66.7)	0.999
Index of microvascular resistance (U)	33.7 ± 25.0	20.7 ± 14.4	0.046	28.8 ± 19.9	19.4 ± 8.7	0.148

CK-MB: creatine kinase-MB; LAD: left anterior descending artery; RWMSI: regional wall motion score index; STR: ST-segment elevation resolution; TMP grade: TIMI myocardial perfusion grade.