Table 4 Influence of high-voltage electrical injury according to the pathway of the electrical current (vertical vs. horizontal)
From: Functional changes of the myocardium in survivors of high-voltage electrical injury
Baseline | Six months | |||||
|---|---|---|---|---|---|---|
Vertical axis ( n = 17) | Horizontal axis ( n = 6) | P -value | Vertical axis ( n = 16) | Horizontal axis ( n = 5) | P -value | |
LVEF (%) | 66 ± 4 | 66 ± 3 | 0.92 | 64 ± 5 | 65 ± 5 | 0.60 |
E wave velocity (cm/sec) | 84 ± 24 | 84 ± 13 | 0.96 | 70 ± 20 | 66 ± 16 | 0.65 |
A wave velocity (cm/sec) | 77 ± 17 | 74 ± 23 | 0.75 | 75 ± 20 | 68 ± 15 | 0.49 |
Deceleration time (msec) | 200 ± 48 | 198 ± 65 | 0.93 | 243 ± 70 | 207 ± 43 | 0.29 |
E/A ratio | 1.1 ± 0.3 | 1.2 ± 0.4 | 0.44 | 1.0 ± 0.5 | 1.0 ± 0.4 | 0.96 |
Ea (cm/sec) | 8.7 ± 2.6 | 10.9 ± 2.6 | 0.09 | 8.1 ± 2.3 | 7.8 ± 1.5 | 0.80 |
E/Ea ratio | 10.1 ± 7.7 | 7.9 ± 1.4 | 0.08 | 9.1 ± 3.0 | 8.4 ± 1.3 | 0.63 |
Strain (%) | ||||||
Longitudinal | -19.0 ± 4.1 | -18.7 ± 2.3 | 0.85 | -19.2 ± 2.9 | -18.5 ± 3.0 | 0.62 |
Circumferential | -19.3 ± 4.3 | -21.2 ± 8.3 | 0.47 | -19.6 ± 5.8 | -19.8 ± 3.6 | 0.95 |
Radial | 50.9 ± 17.8 | 55.0 ± 15.7 | 0.63 | 46.1 ± 15.5 | 54.0 ± 10.5 | 0.30 |
Strain rate (1/sec) | ||||||
Longitudinal | -1.50 ± 0.42 | -1.44 ± 0.32 | 0.76 | -1.22 ± 0.21 | -1.15 ± 0.21 | 0.51 |
Circumferential | -2.08 ± 0.46 | -2.52 ± 0.69 | 0.55 | -1.82 ± 0.59 | -1.45 ± 0.34 | 0.21 |
Radial | 2.87 ± 1.19 | 2.59 ± 0.78 | 0.61 | 2.38 ± 0.95 | 1.98 ± 0.48 | 0.38 |