Matt Harmon

140 Chapter seven Table 1. Baseline patient characteristics in all patients and survivors vs. non-survivors at 28-days All N=567 Survivors N=328 Non-survivors N=239 P-value Demographic characteristics Age (yr) - mean ±SD 64.07 ±12.31 60,94 ±12.4 68,37 ±10.81 <0.0001 Height (cm) - mean ±SD 175,13 ±8.55 176,19 ±7.9 173,66 ±9.19 0.001 Weight (kg) - mean ±SD 81,82 ±16.05 81,76 ±15.24 81,89 ±17.15 0,929 Male sex – no. (%) 460 (81.1) 273 (83.23) 187 (78.24) 0.175 Medical History - no.(%) Chronic heart failure 35 (6.2) 14 (4.27) 21 (8.79) 0.038 Previous AMI 125 (22.0) 58 (17.68) 67 (28.03) 0.004 Ischemic heart disease 163 (28.8) 85 (25.91) 78 (32.64) 0.077 Previous cardiac arrhythmia 93 (16.6) 43 (13.11) 51 (21.34) 0.01 Previous cardiac arrest 11 (1.9) 4 (1.22) 7 (2.93) 0.221 Arterial hypertension 220 (38.9) 117 (35.67) 103 (43.1) 0.081 TIA or stroke 41 (7.2) 13 (3.96) 28 (11.72) <0.0001 Diabetes 86 (15.3) 37 (11.28) 49 (20.5) 0.003 Asthma or COPD 65 (11.5) 30 (9.15) 35 (14.64) 0.051 Characteristics of the cardiac arrest Bystander performed CPR - no. (%) 400 (70.7) 252 (76.83) 148 (61.92) <0.0001 Time from cardiac arrest to BLS - median (IQR) 1 (0-2) 1 (0-2) 1 (0-3) 0.071 Time from cardiac arrest to ROSC - median (IQR) 25 (16.5- 40) 20 (14-31) 35 (23-51.5) <0.0001 First monitored rhythm - no. (%) <0.0001 Asystole - no. (%) 68 (12.0) 12 (3.66) 56 (23.43) - Non-perfusing VT - no. (%) 12 (2.1) 7 (2.13) 5 (2.09) - PEA - no. (%) 35 (6.2) 10 (3.05) 25 (10.46) - ROSC after bystander defibrillation - no. (%) 12 (2.1) 10 (3.05) 2 (0.84) - VF - no. (%) 428 (75.5) 284 (86.59) 144 (60.25) - Unknown - no. (%) 12 (2.1) 5 (1.52) 7 (2.93) - Clinical characteristics on admission First Body temperature (°C) - mean ±SD 35.32 ±1.14 35.4 ±1.07 35.19 ±1.23 0.039 Circulatory shock - no. (%) 57 (10.1) 22 (6.71) 36 (15.06) 0.001 SOFA score - mean ±SD 10.55 ±2.62 10.02 ±2.43 11.23 ±2.7 <0.0001 Abbreviations: AMI, acute myocardial infarction, BLS, basic life support, CPR, cardiopulmonary resuscitation, COPD, chronic obstructive pulmonary disease, IQR, interquartile range, PEA, pulseless electrical activity, ROSC, return of spontaneous circulation , SOFA, sequential organ failure assessment, TIA, transient ischemic attack, VT, ventricular tachycardia, VF, ventricular fibrillation.