Skip to main content

Table 2 Patient characteristics and cardiac arrest findings on-site in thirty-five patients with laryngeal tube ventilation and in forty-one patients with bag valve mask ventilation

From: EMT-led laryngeal tube vs. face-mask ventilation during cardiopulmonary resuscitation - a multicenter prospective randomized trial

  LT group (n = 35) BVM group (n = 41) p-value
Patient characteristics
 Male gender (n; %) 23; 65.7 26; 63.4 0.811
 Age (year; SD) 69.1 ± 17.4 71.4 ± 13.7 0.554
 Witnessed arrest (n; %) 11; 31.4 15; 36.6 0.993
 Hospital discharge (n; %) 1; 2.9 1; 2.4 0.848
Intervals
 Call - CPR onset (median; IQR) 3 (1; 9.5) 4 (1; 7) 0.885
 Call - effective ventilation (min; ±SD) 10.1 ± 8.0 8.9 ± 5.8 0.705
 Call - hospital arrival (min; ±SD) 68.4 + 50.5 53.1 + 13.3 0.953
Basic Life Support
 Bystander CPR (n; %) 18; 51.4 13; 31.7 0.169
 Effective CPR (n; % 11; 31.4 6; 14.6 0.095
Advanced Life Support
 Effective ventilation (n; %) 25; 71.4 24; 58.5 0.686
 Tracheal intubation (n; %) 11; 31.4 9; 22.0 0.374
 First CO2 (mm Hg; SD) 33.0 ± 16.9 23.5 ± 19.6 0.12
First documented ECG rhythm    0.606
 Asystole (n; %) 20; 57.1 17; 41.5  
 Pulse-less electrical activity (n; %) 6; 17.1 7; 17.0  
 pVT/VF (n; %) 8; 22.9 11; 26.8  
ROSC (n; %) 9; 25.7 7; 17.1 0.478
 Heart rate (mean, ±SD) 87.2 ± 23.1 73.0 ± 38.6 0.375
 Systolic blood pressure (mean, ±SD) 122.4 ± 39.2 94.6 ± 28.8 0.185
 O2 saturation (mean, ±SD) 91.1 ± 7.9 86.8 ± 8.7 0.272
Complications    0.961
 Aspiration (n) 0 1  
 Airway bleeding (n) 1 1  
 Regurgitation (n) 4 7  
  1. BVM bag valve mask, CO 2 carbon dioxide, CPRcardiopulmonary resuscitation, ECG Electrocardiography, IQR interquartile range, LT laryngeal tube, n number, O 2 oxygen, pVT pulseless ventricular tachycardia, ROSCreturn of spontaneous circulation, SD standard deviation, VF ventricular fibrillation