Skip to main content

Table 3 Prehospital characteristics

From: Rationale, design, and profile of Comprehensive Registry of In-Hospital Intensive Care for OHCA Survival (CRITICAL) study in Osaka, Japan

  Total
(n = 657)
Witness status, n (%)   
 Witnessed by bystanders 251 (38.2)
  Family member 135 (20.5)
  Friend 11 (1.7)
  Colleague 9 (1.4)
  Passerby 33 (5.0)
  Others 63 (9.6)
 Witnessed by EMS personnel 72 (11.0)
 Not witnessed 334 (50.8)
Bystander-initiated CPR, n (%)   
 Yes 210 (31.9)
  Chest compression—only CPR 167 (25.4)
  Conventional CPR with rescue breathing 43 (6.5)
 No 447 (68.1)
Shock by public-access AEDs, n (%) 3 (0.5)
Dispatcher instructions, n (%) 243 (37.0)
First documented rhythm, n (%)   
 VF/pulseless VT 77 (11.6)
 PEA 154 (23.4)
 Asystole 358 (54.5)
 Others 68 (10.4)
Shock by EMS personnel, n (%) 102 (15.5)
Advanced airway management, n (%)   
 None 309 (47.0)
 Esophageal obturator airway 195 (29.7)
 Endotracheal intubation 143 (21.8)
 Laryngeal mask airway 10 (1.5)
Intravenous fluid, n (%) 191 (29.1)
Adrenaline administration, n (%) 100 (15.2)
Call to CPR started by EMS, min, mean (SD) 9.8 (6.0)
Call to hospital arrival, min, mean (SD) 32.2 (9.9)
  1. EMS emergency medical service, CPR cardiopulmonary resuscitation, VF ventricular fibrillation, PEA pulseless electrical activity, AED automated external defibrillator, SD standard deviation