|
Demographic characteristics
| | | |
|
Male sex—no. (%)
|
592/785 (75.4)
|
511/663 (77.1)
|
81/122 (66.4)
|
|
Age—year, median (IQR)a
|
30 (21–39)
|
31 (25–42)
|
5 (2–9)
|
|
Medical history—no. (%)
| | | |
| Cardiovascular risks factors (≧ 1) |
68/629 (10.8)
|
68/545 (12.5)
|
0/84
|
|
Diabetes
|
10/629 (1.6)
|
10/545 (1.8)
|
–
|
|
Dyslipidaemia
|
20/629 (3.2)
|
20/545 (3.7)
|
–
|
|
Smoking
|
34/629 (5.4)
|
34/545 (6.2)
|
–
|
|
Hypertension
|
15/629 (2.4)
|
15/545 (2.8)
|
–
|
|
Overweight
|
7/629 (1.1)
|
7/545 (1.3)
|
–
|
|
Family history
|
1/629 (0.2)
|
1/545 (0.2)
|
–
|
|
Cardiac history
|
25/768 (3.3)
|
23/649 (3.6)
|
2/119 (1.7)
|
|
Coronaropathy
|
13/768 (1.7)
|
13/649 (2.0)
|
0
|
|
Heart arrhythmia
|
9/768 (1.2)
|
8/649 (1.2)
|
1/119 (0.8)
|
|
Valvulopathy
|
3/768 (0.4)
|
3/649 (0.5)
|
0
|
|
Other (interventricular communication, …)
|
6/768 (0.8)
|
5/649 (0.8)
|
1/119 (0.8)
|
|
Type of electrical Injury—no. (%)
| | | |
|
Trauma context
| | | |
|
Workplace
|
254/559 (45.4)
|
254/464 (54.7)
|
0
|
|
Domestic accident
|
301/559 (53.8)
|
232/464 (50.0)
|
69/95 (100)
|
|
Suicide attempt
|
4/559 (0.7)
|
4/464 (0.9)
|
0
|
|
High voltage (> 1000Volts)—no. (%)
|
55/568 (9.7)
|
53/493 (10.8)
|
2/75 (2.7)
|
|
Transthoracic current—no. (%)
|
273/459 (59.5)
|
238/395 (60.3)
|
35/64 (54.7)
|
|
Symptoms—no. (%)
| | | |
|
Asymptomatica
|
234/785 (29.8)
|
203/663 (30.6)
|
31/122 (25.4)
|
|
Initial loss of consciousness
|
38/754 (5.0)
|
35/636 (5.5)
|
3/118 (2.5)
|
|
Burns
|
99/756 (13.1)
|
76/636 (11.9)
|
23/120 (19.2)
|
|
Second and third degree
|
52/756 (6.9)
|
35/636 (5.5)
|
17/120 (14.2)
|
| TBSA ≦ 1% (second and third degree) |
44/728 (6.0)
|
28/619 (4.5)
|
16/109 (14.2)
|
|
Chest pain
|
80/744 (10.8)
|
77/625 (12.3)
|
3/119 (14.7)
|
|
Headache and/or vertigo
|
40/744 (5.4)
|
37/625 (5.9)
|
3/119 (14.7)
|
|
Numbness of extremities
|
69/744 (9.3)
|
63/625 (10.1)
|
6/119 (5.0)
|
|
Association with traumatic injury
|
95/744 (12.8)
|
88/625 (14.1)
|
7/119 (5.9)
|
|
Initial HR—bpm*d
|
80 ± 20.1
|
78 ± 17.3
|
103 ± 22.7
|
|
Initial systolic blood pressure—mmHg
|
130 ± 17.3
|
131 ± 16.3
|
110 ± 12.3
|
|
Initial diastolic blood pressure—mmHg
|
79 ± 11.6
|
80 ± 11
|
69 ± 11.8
|
|
Management
| | | |
|
ECG on admission
|
756/785 (96.3)
|
641/663 (96.7)
|
115/122 (94.3)
|
|
Abnormal ECG
|
99/756 (13.1)
|
91/641 (14.2)
|
8/115 (7.0)
|
|
Troponin assay
|
533/785 (67.9)
|
465/663 (70.1)
|
68/122 (55.7)
|
|
Elevated initial troponin
|
17/533 (3.2)
|
16/465 (3.4)
|
1/68 (1.5)
|
|
Second troponin assay
|
197/533 (37.0)
|
183/465 (39.4)
|
14/68 (20.6)
|
|
Troponin rise
|
8/533 (1.5)
|
8/465 (1.7)
|
0/68 (0)
|
|
Delay of the second assay—hs, median (IQR)b
|
6 (4–11)
|
6 (4–11)
|
6 (4–12)
|
|
Type of monitoring
| | | |
|
Scope < 6 h
|
41/559 (7.3)
|
38/489 (7.8)
|
3/70 (4.3)
|
|
Scope > 6 h and < 24 h
|
125/559 (22.4)
|
106/489 (21.7)
|
19/70 (27.1)
|
|
Scope > 24 h
|
27/559 (4.8)
|
26/489 (5.3)
|
1/70 (1.4)
|
|
ECG each 6 h without scope
|
14/559 (2.5)
|
13/489 (2.7)
|
1/70 (1.4)
|
|
ECG > 6 h without scope
|
33/559 (5.9)
|
28/489 (5.7)
|
5/70 (7.1)
|
|
Length of monitoring—hours, mean (SD)c
|
15.5 ± 23
|
13.5 ± 23
|
24 ± 19
|
|
Hospitalisation
|
420/715 (58.7)
|
333/614 (54.2)
|
87/101 (86.1)
|
|
Intensive care unit
|
103/715 (14.4)
|
95/614 (15.5)
|
8/101 (7.9)
|
|
Short term hospitalisation unit
|
182/715 (25.5)
|
176/614 (28.7)
|
7/101 (6.9)
|
|
Conventional medical service
|
65/715 (9.1)
|
36/614 (5.9)
|
28/101 (27.7)
|
|
Discharge from the ED
|
365/715 (51.0)
|
330/614 (53.7)
|
35/101 (34.7)
|
