TY - JOUR
T1 - Reperfusion injury protection during Basic Life Support improves circulation and survival outcomes in a porcine model of prolonged cardiac arrest
AU - Debaty, Guillaume
AU - Lurie, Keith
AU - Metzger, Anja
AU - Lick, Michael
AU - Bartos, Jason A.
AU - Rees, Jennifer N.
AU - McKnite, Scott
AU - Puertas, Laura
AU - Pepe, Paul
AU - Fowler, Raymond
AU - Yannopoulos, Demetris
N1 - Publisher Copyright:
© 2016
PY - 2016/8/1
Y1 - 2016/8/1
N2 - Objective Ischemic postconditioning (PC) using three intentional pauses at the start of cardiopulmonary resuscitation (CPR) improves outcomes after cardiac arrest in pigs when epinephrine (epi) is used before defibrillation. We hypothesized PC, performed during basic life support (BLS) in the absence of epinephrine, would reduce reperfusion injury and enhance 24 h functional recovery. Design Prospective animal investigation. Setting Animal laboratory Subjects Female farm pigs (n = 46, 39 ± 1 kg). Interventions Protocol A: After 12 min of ventricular fibrillation (VF), 28 pigs were randomized to four groups: (A) Standard CPR (SCPR), (B) active compression-decompression CPR with an impedance threshold device (ACD-ITD), (C) SCPR + PC (SCPR + PC) and (D) ACD-ITD CPR + PC. Protocol B: After 15 min of VF, 18 pigs were randomized to ACD-ITD CPR or ACD-ITD + PC. The BLS duration was 2.75 min in Protocol A and 5 min in Protocol B. Following BLS, up to three shocks were delivered. Without return of spontaneous circulation (ROSC), CPR was resumed and epi (0.5 mg) and defibrillation delivered. The primary end point was survival without major adverse events. Hemodynamic parameters and left ventricular ejection fraction (LVEF) were also measured. Data are presented as mean ± SEM. Measurements and Main Results Protocol A: ACD-ITD + PC (group D) improved coronary perfusion pressure after 3 min of BLS versus the three other groups (28 ± 6, 35 ± 7, 23 ± 5 and 47 ± 7 for groups A, B, C, D respectively, p = 0.05). There were no significant differences in 24 h survival between groups. Protocol B LVEF 4 h post ROSC was significantly higher with ACD-ITD + PC vs ACD-ITD alone (52.5 ± 3% vs. 37.5 ± 6.6%, p = 0.045). Survival rates were significantly higher with ACD-ITD + PC vs. ACD-ITD alone (p = 0.027). Conclusions BLS using ACD-ITD + PC reduced post resuscitation cardiac dysfunction and improved functional recovery after prolonged untreated VF in pigs. Protocol number 12-11.
AB - Objective Ischemic postconditioning (PC) using three intentional pauses at the start of cardiopulmonary resuscitation (CPR) improves outcomes after cardiac arrest in pigs when epinephrine (epi) is used before defibrillation. We hypothesized PC, performed during basic life support (BLS) in the absence of epinephrine, would reduce reperfusion injury and enhance 24 h functional recovery. Design Prospective animal investigation. Setting Animal laboratory Subjects Female farm pigs (n = 46, 39 ± 1 kg). Interventions Protocol A: After 12 min of ventricular fibrillation (VF), 28 pigs were randomized to four groups: (A) Standard CPR (SCPR), (B) active compression-decompression CPR with an impedance threshold device (ACD-ITD), (C) SCPR + PC (SCPR + PC) and (D) ACD-ITD CPR + PC. Protocol B: After 15 min of VF, 18 pigs were randomized to ACD-ITD CPR or ACD-ITD + PC. The BLS duration was 2.75 min in Protocol A and 5 min in Protocol B. Following BLS, up to three shocks were delivered. Without return of spontaneous circulation (ROSC), CPR was resumed and epi (0.5 mg) and defibrillation delivered. The primary end point was survival without major adverse events. Hemodynamic parameters and left ventricular ejection fraction (LVEF) were also measured. Data are presented as mean ± SEM. Measurements and Main Results Protocol A: ACD-ITD + PC (group D) improved coronary perfusion pressure after 3 min of BLS versus the three other groups (28 ± 6, 35 ± 7, 23 ± 5 and 47 ± 7 for groups A, B, C, D respectively, p = 0.05). There were no significant differences in 24 h survival between groups. Protocol B LVEF 4 h post ROSC was significantly higher with ACD-ITD + PC vs ACD-ITD alone (52.5 ± 3% vs. 37.5 ± 6.6%, p = 0.045). Survival rates were significantly higher with ACD-ITD + PC vs. ACD-ITD alone (p = 0.027). Conclusions BLS using ACD-ITD + PC reduced post resuscitation cardiac dysfunction and improved functional recovery after prolonged untreated VF in pigs. Protocol number 12-11.
KW - Active compression decompression
KW - Basic life support
KW - Cardiac arrest
KW - Cardiopulmonary resuscitation
KW - Impedance threshold device
KW - Ischemic postconditioning
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U2 - 10.1016/j.resuscitation.2016.05.008
DO - 10.1016/j.resuscitation.2016.05.008
M3 - Article
C2 - 27211835
AN - SCOPUS:84989864140
SN - 0300-9572
VL - 105
SP - 29
EP - 35
JO - Resuscitation
JF - Resuscitation
ER -