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Table 2 Features of cardiac arrest events stratified by survival outcome

From: Monitoring of serum lactate level during cardiopulmonary resuscitation in adult in-hospital cardiac arrest

Variables All patients Patients surviving to hospital discharge Death at hospital discharge P value
(n = 340) (n = 50) (n = 290)
Arrest at night, n (%) 218 (64) 29 (58) 189 (65) 0.34
Arrest at the weekend, n (%) 105 (31) 17 (34) 88 (30) 0.62
Arrest location, n (%)     0.69
 Intensive care unit 151 (44) 23 (46) 128 (44)
 General ward 171 (50) 26 (52) 145 (50)
 Others 18 (5) 1 (2) 17 (6)  
Witnessed arrest, n (%) 241 (71) 35 (70) 206 (71) 0.87
Monitored status, n (%) 199 (59) 28 (56) 171 (59) 0.76
Shockable rhythm, n (%) 49 (14) 14 (28) 35 (12) 0.007
Critical care interventions in place at time of arrest, n (%)
 Mechanical ventilation 64 (19) 7 (14) 57 (20) 0.44
 Anti-arrhythmics 30 (9) 5 (10) 25 (9) 0.79
 Vasopressors 154 (45) 16 (32) 138 (48) 0.05
 Dialysis 23 (7) 2 (4) 21 (7) 0.55
 Pulmonary artery catheter 2 (0.6) 2 (4) 0 (0) 0.02
 Intra-aortic balloon pumping 1 (0.3) 0 (0) 1 (0.3) 1
Lactate, mmol/L, mean (SD) 9.6 (4.6) 7.2 (4.1) 10.0 (4.5) <0.001
CPR duration, minutes, mean (SD) 28.8 (26.9) 12.4 (12.8) 31.6 (27.7) <0.001
Post-ROSC interventions, n (%)
 Extracorporeal membrane oxygenation 20 (6) 3 (6) 17 (6) 1
 Therapeutic hypothermia 1 (0.3) 0 (0) 1 (0.3) 1
 Percutaneous coronary intervention 8 (2) 3 (6) 5 (2) 0.10
  1. SD standard deviation, CPR cardiopulmonary resuscitation, ROSC return of spontaneous circulation