ECG, signal averaged ECG, and echocardiographic variables according to ventricular arrhythmias
| Variables | No arrhythmias | Minor arrhythmias | nsVT | sVT and VF | Normal subjects with RBBB | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Patients (n) | 19 | 34 | 7 | 6 | 23 | |||||
| Follow up (years) | 14.84 (5.77) | 17.5 (6.19) | 12.71 (3.45) | 13.33 (2.42) | — | |||||
| Age at surgery (years) | 9.36 (8.13) | 11.61 (9.39) | 21.85 (10.52) | 8.66 (6.12) | 28.75 (7.11)2-150 | |||||
| QRS (ms) | 137.77 (26.21) | 145.12 (24.62) | 138.28 (26.71) | 163.5 (14.55) | 108.21 (3.04) | |||||
| QRSd (ms) | 38.88 (15.67) | 37 (13.16) | 47.5 (12.58) | 36.66 (15.05) | 28.42 (6.88) | |||||
| QTd (ms) | 60 (24.19) | 72.84 (40.56) | 100 (62.84) | 103.33 (30.11) | 51.58 (14.63) | |||||
| QTdc | 0.67 (0.28) | 0.79 (0.43) | 1.15 (0.76) | 1.14 (0.36) | 52.51 (16.96) | |||||
| JTd (ms) | 75 (41.47) | 89.66 (43.19) | 100 (67.33) | 113.33 (43.20) | 51.02 (16.96) | |||||
| JTdc | 85.16 (46.72) | 98.93 (45.82) | 109.5 (73.52) | 124.16 (43.47) | 50.89 (16.91) | |||||
| Late potentials | Positive | Negative | Positive | Negative | Positive | Negative | Positive | Negative | Positive | Negative |
| 7 | 11 | 14 | 14 | 2 | 4 | 2 | 3 | 0 | 23 | |
| QRS 40 (ms) | 150.44 (24.06) | 163 (25.52) | 167 (42.87) | 179.83 (10.96) | 129.17 (5.95) | |||||
| LAS 40 (ms) | 34.55 (26.81) | 35.31 (20.04) | 41 (20.51) | 44.16 (24.94) | 34.24 (14.53) | |||||
| RMS 40 (μV) | 39.77 (36.52) | 32.31 (19.79) | 30.75 (16) | 25.83 (15.25) | 26.72 (10.44) | |||||
| EDVRV (ml/m2) | 92.61 (29.28) | 112.48 (35.43) | 123.85 (26.07) | 154.5 (60.85) | 56.12 (7.33) | |||||
| EFRV (%) | 54.94 (6.93) | 53.09 (9.48) | 45.85 (10.20) | 46.5 (11.29) | 60.57 (5.59) | |||||
| EDVLV (ml/m2) | 56.77 (11.94) | 63.69 (18.35) | 88 (56.85) | 72 (30.67) | 65.14 (17.45) | |||||
| EFLV (%) | 59.11 (5.02) | 63.09 (7.24) | 55.28 (13.85) | 58 (13.29) | 68.12 (5.64) | |||||
Values are mean (SD).
↵2-150 Age when ECG and echocardiography were performed.
EDVLV, end diastolic volume of the left ventricle; EDVRV, end diastolic volume of the right ventricle; EFLV, ejection fraction of the left ventricle; EFRV, ejection fraction of the right ventricle; JTd, JT dispersion; JTdc, JTc dispersion; LAS, low amplitude signal; QRSd, QRS dispersion; QTd, QT dispersion; QTdc, QTc dispersion; RBBB, right bundle branch block; RMS, root mean square; VF, ventricular fibrillation; nsVT, non-sustained ventricular tachycardia; sVT, sustained ventricular tachycardia.