Table 2

ECG abnormalities and patient characteristics for patients suffering from out-of-hospital cardiac arrest according to whether the patients had cardiac disease when the cardiac arrest occurred

VariableOut-of-hospital cardiac patients with cardiac disease*Out-of-hospital cardiac patients without cardiac disease*Total
Count, no.131513522667
Median age in years (Q1–Q3)75.3 [65.5, 82.3)69.5 [59.6, 78.4)72.5 [62.3, 80.7)
Male sex, no.834 (63.4)816 (60.4)1650 (61.9)
Median follow-up (Q1–Q3)1.9 [0.7, 4.0)1.7 [0.6, 3.7)1.8 [0.6, 3.8)
Atrial fibrillation287 (21.8)50 (3.7)337 (12.6)
Atrial flutter20 (1.5)3 (0.2)23 (0.9)
Cornell LVH145 (11.0)90 (6.7)235 (8.8)
Sokolow-Lyon LVH185 (14.1)154 (11.4)339 (12.7)
Left bundle branch block77 (5.9)47 (3.5)124 (4.6)
Non-specific intraventricular block71 (5.4)38 (2.8)109 (4.1)
Right bundle branch block89 (6.8)56 (4.1)145 (5.4)
Q-wave259 (19.7)172 (12.7)431 (16.2)
ST-depression without atrial fibrillation202 (15.4)107 (7.9)309 (11.6)
ST-depression with atrial fibrillation99 (7.5)18 (1.3)117 (4.4)
ST-elevation46 (3.5)20 (1.5)66 (2.5)
  • All results are reported as the number of patients (%) unless otherwise specified.

  • Q1–Q3 1st+3rdquartiles.

  • *Cardiac disease at the time of the cardiac arrest: heart failure, ischaemic heart disease, prior myocardial infarction, cardiomyopathy, atrial fibrillation, atrial flutter, congenital heart disease, valvular heart disease, other cardiac arrhythmia, other cardiac disease.

  • LVH, left ventricular hypertrophy.