Table 3

Echocardiography at follow-up in patients with juvenile dermatomyositis (JDM) and controls

	n	Patients with JDM	Controls	p Value
Two-dimensional echocardiography
LA area, cm²	59	15.5 (3.4)	16.5 (3.7)	0.095
RA area, cm²	59	13.3 (3.1)	14.2 (3.5)	0.086
LV ejection fraction, %	47	63.2 (5.1)	62.5 (5.5)	0.487
LV diastolic volume, cm³	47	91.0 (25.4)	97.5 (25.7)	0.029
LV systolic volume, cm³	47	33.8 (11.6)	37.1 (12.5)	0.051
M-mode echocardiography
Septal diastolic thickness, mm	59	7.9 (1.7)	7.8 (1.5)	0.643
Septal systolic thickness, mm	59	10.9 (2.3)	10.7 (2.0)	0.537
LV diastolic diameter, mm	59	48.1 (5.4)	49.5 (5.9)	0.073
LV systolic diameter, mm	59	31.6 (4.8)	32.8 (4.7)	0.047
PW diastolic thickness, mm	59	8.3 (1.6)	7.9 (1.4)	0.858
PW systolic thickness, mm	59	12.7 (3.1)	12.4 (2.4)	0.381
Conventional Doppler
E velocity, m/s	59	0.86 (0.17)	0.86 (0.15)	0.858
A velocity, m/s	59	0.49 (0.11)	0.47 (0.10)	0.132
E/A ratio	59	1.81 (0.50)	1.95 (0.54)	0.116
MV deceleration time, ms	59	193 (42)	200 (42)	0.278
LVOT stroke volume, ml	56	59 (21.4)	67 (18.9)	0.008
LVOT cardiac output, litres/min	55	4.1 (1.22)	4.5 (1.20)	0.021
Valvular heart disease^*
Mitral regurgitation	59	2 (3)	2 (3)	NS
Aortic regurgitation	59	2 (3)	1 (2)	NS
Tissue Doppler
E' velocity, cm/s	56	11.3 (2.8)	12.4 (2.1)	0.003
E/E' ratio	56	8.04 (2.30)	7.09 (1.20)	0.007

Values are mean (SD). n=47 is due to difficulties with data acquisition when measuring ejection fraction. n=55 and 56 is due to missing Doppler data in 3–4 of the pairs.
↵* Number (%) with ≥ grade 1 regurgitation.
A, late diastolic transmitral flow; E, early diastolic transmitral flow; E', early diastolic tissue velocity; LA, left atrium; LV, left ventricle; LVOT, left ventricular outflow tract; MV, mitral valve; n, number of pairs; PW, posterior wall; RA, right atrium.