Table 2. Echocardiographic characteristics for IIM patients, AVM patients, and healthy controls.

Variables	Control (n=30)	IIM (n=46)	AVM (n=24)	P value (IIM vs. AVM)
IVST (mm)	9.3±2.0	8.5±1.7	8.5±1.7	0.953
LVEDD (mm)	45±4	48±10	51±5	0.205
LVEF (%)	68±7	58±14	54±11	0.154
E(m/s)	0.74±0.16	0.79±0.25	0.72±0.20	0.293
E/A	1.50±0.53	1.12±0.47	1.38±0.49	0.046
e' (m/s)	0.10±0.02	0.07±0.03	0.09±0.03	0.123
Pericardial effusion	0 (0)	13 (28.2)	6 (25.0)	0.771
Global LS	−22.8±2.0	−17.8±4.9	−14.5±2.4	<0.001
Regional basal LS	−20.1±1.7	−15.0±4.4	−14.2±2.3	0.379
Regional mid LS	−21.9±2.0	−17.1±4.7	−14.1±2.5	0.001
Regional apical LS	−26.2±3.7	−21.4±6.5	−15.3±3.2	<0.001

Values are mean ± SD or n (%). IIM, idiopathic inflammatory myopathies; AVM, acute viral myocarditis; IVST, inter-ventricular septal thickness; LVEDD, left ventricular end-diastolic diameter; LVEF, left ventricular ejection fraction; E, peak early; A, peak late; e', average of the medial and lateral mitral annular diastolic velocities; LS, longitudinal strain; PM, polymyositis; DM, dermatomyositis.