Risk of ventricular arrhythmia in patients with myocardial infarction and non-obstructive coronary arteries and normal ejection fraction

Table 2 Cardiac magnetic resonance parameters

	Total (n = 131)	MI (n = 34)	Myocarditis (n = 47)	“no LGE” (n = 50)	P
LVEF (%)	58.6 ± 8.2	57.1 ± 7.8	57.9 ± 8.6	60.2 ± 7.8	0.18
LVEDV (mL)	154.7 ± 37.7	158.8 ± 41	159.6 ± 28.6	147.3 ± 42.1	0.21
LVESV (mL)	64.5 ± 22.1	69.5 ± 25.5	67.1 ± 16.9	58.6 ± 22.923	0.048
LV wall thickening abnormality, n (%)	62 (47.3)	30 (88.2)	22 (46.8)1	10 (20.0)23	< 0.001
Hypokinetic extent, segments	1.1 ± 1.5	2 ± 1.6	1.2 ± 1.61	0.4 ± 1.123	< 0.001
0 segment, n (%)	69 (52.7)	4 (11.8)	25 (53.2)	40 (80.0)
1-2 segments, n (%)	43 (32.9)	20 (58.8)	14 (29.8)	9 (18.0)
> 2 segments, n (%)	19 (14.5)	10 (29.4)	8 (17.0)	1 (2.0)
LGE transmural extent, segments	0.9 ± 0.8	3.6 ± 0.6	2.1 ± 0.91	0	< 0.001
< 50%, n (%)	83 (73.4)	2 (5.9)	31 (66.0)	0
> 50%, n (%)	48 (36.6)	32 (94.1)	16 (34.0)	0
LGE transversal extent, segments	1.9 ± 2.2	1.9 ± 1.3	3.5 ± 2.4	023	< 0.001
0 segment, n (%)	50 (38.2)	0	0	50 (100.0)
1-2 segments, n (%)	46 (35.1)	26 (76.5)	20 (42.6)	0
> 2 segments, n (%)	35 (26.7)	8 (23.5)	27 (57.4)	0
LGE/CINE concordance, n (%)	49 (37.4)	30 (88.2)	19 (41.3)1	0	< 0.001
Pericardial effusion, n (%)	20 (15.3)	4 (11.8)	8 (17.4)	8 (16)	0.8

¹P significant between MI and myocarditis groups;

²P significant between MI and “no LGE” groups;

³P significant between myocarditis and “no LGE” groups. MI: Myocardial infarction; LGE: Late gadolinium enhancement; LV: Left ventricle; LVEDV: Left ventricular end diastolic volume; LVESV: Left ventricular end systolic volume; LVEF: Left ventricular ejection fraction.