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Table 1 Baseline clinical and cardiovascular magnetic resonance (CMR) characteristics

From: Myocardial extracellular volume by T1 mapping: a new marker of arrhythmia in mitral valve prolapse

  MVP–MAD
n = 30
Control group (No MVP)
MR-NoMAD
n = 14
P vs MVP–MAD NoMR-NoMAD
n = 10
P vs MVP–MAD
Age (y) 50 ± 17 53 ± 22 0.70 46 ± 21 0.53
Male, n (%) 18 (60%) 7 (50%) 0.75 6 (60%) 1.0
Weight (kg) 72 ± 12 70 ± 14 0.69 82 ± 13 0.02
Height (cm) 177 ± 10 170 ± 10 0.04 179 ± 11 0.65
Hypertension, n (%) 2 (7%) 6 (43%) 0.008 2 (20%) 0.26
Active smoker, n (%) 3 (10%) 1 (7%) 1.0 1 (10%) 1.0
Hyperlipidaemia, n (%) 2 (7%) 2 (14%) 0.58 2 (20%) 0.26
LVEDV (ml) 192 ± 56 148 ± 39 0.01 164 ± 29 0.14
LVEDVI (ml/m2) 102 ± 29 81 ± 17 0.018 82 ± 16 0.048
LVESV (ml) 84 ± 32 60 ± 21 0.02 70 ± 12 0.20
LVEF (%) 57 ± 8 60 ± 8 0.32 57 ± 3 0.99
LV mass index (g/m2) 66 ± 16 62 ± 15 0.45 63 ± 9 0.59
MAD length (mm) 9.4 [7.1–12.3]   
Presence of LGE, n (%) 14 (47%) 0 (0%) 0.002 0 (0%) 0.007
 N of positive segments (n = 14) 3 [3–4] 0   0  
Basal slice pre-Gd T1 (ms) 1067 ± 45 1029 ± 37 0.009 1029 ± 26 0.016
Basal slice ECVsyn (%) 30 ± 3 24 ± 3 < 0.0001 24 ± 2 < 0.0001
  1. ECVsyn synthetic extracellular volume fraction, LV left ventricle, LVEDV left ventricle end-diastolic volume, LVEDVI left ventricle end-diastolic volume index, LVEF left ventricle ejection fraction, LGE late gadolinium enhancement Gd gadolinium, MAD mitral annular disjunction, MVP mitral valve prolapse