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- Martin Albrecht, Patrick Meybohm, Ole Broch, Karina Zitta, Marc Hein, Jan-Thorsten Gräsner, Jochen Renner, Berthold Bein, and Matthias Gruenewald.
- Department of Anaesthesiology and Intensive Care Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Germany.
- Resuscitation. 2015 Aug 1;93:89-95.
BackgroundRemote ischaemic post-conditioning (RIPoC) in which transient episodes of ischaemia (e.g. by inflation and deflation of a blood pressure cuff) are applied after a prolonged ischaemia/reperfusion injury, may have the potential to improve patient outcome and survival following cardiac arrest. In this study we employed a pig model of cardiac arrest and successful cardiopulmonary resuscitation to evaluate the effects of RIPoC on haemodynamics, cardiac tissue damage and neurologic deficit.Materials And MethodsA total of 22 pigs were subjected to ventricular fibrillation, cardiopulmonary resuscitation and randomly assigned to Control or RIPoC treatment consisting of 4 cycles of 5 min femoral artery occlusion followed by 5 min of reperfusion starting 10min after return of spontaneous circulation (ROSC). Post-resuscitation was evaluated by haemodynamics using left ventricular conductance catheters, quantification of cardiac troponin T (cTnT), lactate dehydrogenase (LDH) and creatine kinase (CK). Neurological testing was performed 24h after return of spontaneous circulation (ROSC).ResultsRIPoC resulted in a statistically significant reduction of serum cTnT levels 4h after ROSC (P ≤ 0.01). LDH and CK concentrations were significantly lower in RIPoC treated pigs 24h after ROSC (P ≤ 0.001), suggesting tissue and/or cardioprotective effects of RIPoC. End-systolic pressure volume relationship was significantly increased in RIPoC treated animals 4h after ROSC (P ≤ 0.05). Neurological testing revealed a trend towards an improved outcome in RIPoC treated animals.ConclusionsWe propose that RIPoC applied immediately after ROSC reduces serum concentrations of markers for cell damage and improves end-systolic pressure volume relationship 4h after ROSC.Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.
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