Table 2.
Cardiac MR measurements
| Characteristics | Control (n=10) |
+ Com VA (n=50) |
− Com VA (n=57) |
p Value |
|---|---|---|---|---|
| LV EDV (ml) | 112.3 ± 21.3 | 282.6 ± 102.2 | 254.1 ± 94.1 | 0.14 |
| LV EDV index (ml/m2) | 65.5 ± 8.3 | 138.0 ± 44.0 | 127.2 ± 41.4 | 0.19 |
| LV ESV (ml) | 44.6 ± 9.0 | 212.5 ± 107.0 | 179.1 ± 92.2 | 0.09 |
| LV ESV index (ml/m2) | 26.1 ± 4.1 | 104.1 ± 48.7 | 89.3 ± 42.2 | 0.10 |
| LV stroke volume (ml) | 67.7 ± 13.3 | 84.9 ± 22.5 | 75.0 ± 20.8 | 0.02 |
| LV stroke volume index (ml/m2) | 39.4 ± 4.9 | 41.6 ± 10.0 | 37.8 ± 9.9 | 0.05 |
| LV ejection fraction (%) | 60.3 ± 2.7 | 33.1 ± 12.3 | 32.6 ± 12.6 | 0.85 |
| LV mass (g) | 66.5 ± 16.9 | 142.4 ± 60.1 | 138.0 ± 53.8 | 0.69 |
| LV mass index (g/m2) | 38.5 ± 6.7 | 69.5 ± 26.4 | 68.8 ± 23.9 | 0.90 |
| LGE, n (%) | 0 (0) | 18 (36%) | 17 (30%) | 0.50 |
| LGE volume (g) | - | 8.1 (2.8–13.3) | 4.4 (2.8–7.4) | 0.09 |
| LGE volume / LV mass (%) | - | 6.7 (2.8–7.9) | 3.5 (1.8–5.4) | 0.03 |
| Heart rate (beats/min) | 68 ± 10 | 74 ± 18 | 75 ± 14 | 0.71 |
| Native T1 (msec) | 1073 ± 25 | 1131 ± 42 | 1107 ± 45 | 0.006 |
| T1 in basal slice (msec) | 1088 ± 24 | 1124 ± 42 | 1104 ± 50 | 0.03 |
| T1 in mid slice (msec) | 1061 ± 35 | 1130 ± 58 | 1104 ± 50 | 0.02 |
| T1 in apical slice (msec) | 1078 ± 35 | 1144 ± 61 | 1115 ± 49 | 0.009 |
| Native T1 without LGE segments (msec) | - | 1124 ± 36 | 1102 ± 44 | 0.006 |
Variables given are mean ± SD, N (%), or median (interquartile range) p-value is for +ComVA versus −ComVA.
LV=left ventricular; EDV=end-diastolic volume; ESV=end-systolic volume; LGE=late gadolinium enhancement