Repeated epinephrine doses during prolonged cardiopulmonary resuscitation have limited effects on myocardial blood flow: a randomized porcine study

BMC Cardiovascular Disorders

Research Article

Malin Rundgren¹  Henrik Wagner²  Matthias Götberg²  David Zughaft²  Jonas Carlson²  Göran K Olivecrona²  David Erlinge²  Michael Götberg²  Bjarne Madsen Hardig³ 

[1] Department of Anesthesiology and Intensive Care, Lund University, Lund, Sweden;Department of Cardiology, Lund University, Lund, Sweden;Physio-Control/Jolife AB, Ideon Science Park, Lund, Sweden;

关键词: Cardiac arrest;    Mechanical chest compressions;    Epinephrine;   

DOI  :  10.1186/1471-2261-14-199

 received in 2014-10-20, accepted in 2014-12-16,  发布年份 2014

来源: Springer

【 摘 要 】

BackgroundIn current guidelines, prolonged cardiopulmonary resuscitation (CPR) mandates administration of repeated intravenous epinephrine (EPI) doses. This porcine study simulating a prolonged CPR-situation in the coronary catheterisation laboratory, explores the effect of EPI-administrations on coronary perfusion pressure (CPP), continuous coronary artery flow average peak velocity (APV) and amplitude spectrum area (AMSA).MethodsThirty-six pigs were randomized 1:1:1 to EPI 0.02 mg/kg/dose, EPI 0.03 mg/kg/dose or saline (control) in an experimental cardiac arrest (CA) model. During 15 minutes of mechanical chest compressions, four EPI/saline-injections were administered, and the effect on CPP, APV and AMSA were recorded. Comparisons were performed between the control and the two EPI-groups and a combination of the two EPI-groups, EPI-all.ResultCompared to the control group, maximum peak of CPP (Pmax) after injection 1 and 2 was significantly increased in the EPI-all group (p = 0.022, p = 0.016), in EPI 0.02-group after injection 2 and 3 (p = 0.023, p = 0.027) and in EPI 0.03-group after injection 1 (p = 0.013). At Pmax, APV increased only after first injection in both the EPI-all and the EPI 0.03-group compared with the control group (p = 0.011, p = 0.018). There was no statistical difference of AMSA at any Pmax. Seven out of 12 animals (58%) in each EPI-group versus 10 out of 12 (83%) achieved spontaneous circulation after CA.ConclusionIn an experimental CA-CPR pig model repeated doses of intravenous EPI results in a significant increase in APV only after the first injection despite increments in CPP also during the following 2 injections indicating inappropriate changes in coronary vascular resistance during subsequent EPI administration.

【 授权许可】

CC BY   
© Wagner et al.; licensee BioMed Central. 2014