Document Detail


Sevoflurane postconditioning converts persistent ventricular fibrillation into regular rhythm.
MedLine Citation:
PMID:  19367168     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND AND OBJECTIVE: Recent studies showed that ischaemic postconditioning converted persistent ventricular fibrillation to sinus rhythm. The influence of anaesthetic postconditioning on ventricular fibrillation has not yet been determined. In the present study, we studied the possible effect of sevoflurane postconditioning on persistent reperfusion-induced ventricular fibrillation in the isolated rat heart model. METHODS: Isolated Langendorff-perfused rat hearts (n=80) were subjected to 40 min of global ischaemia and reperfusion. The hearts with persistent ventricular fibrillation (n=16) present after 15 min of reperfusion were then randomly assigned into one of the two groups: controls (n=8), reperfusion was continued for 25 min without any intervention, and sevoflurane postconditioning (n=8), rat hearts in the sevoflurane postconditioning group were exposed to sevoflurane at a concentration of 8.0% for 2 min followed by 23 min of reperfusion. As for the third group, the rest of the hearts were included in the nonpersistently fibrillating hearts group (n=64). Left ventricular pressures, heart rate, coronary flow, electrogram and infarct size were measured as variables of ventricular function and cellular injury, respectively. RESULTS: Conversion of ventricular fibrillation into regular rhythm was observed in all hearts subjected to sevofluane postconditioning. Regular beating was maintained by all anaesthetic postconditioned hearts during the subsequent reperfusion. None of the hearts in the control group had normal rhythm at the end of the experiment. At the end of reperfusion, the coronary flow was increased in sevoflurane postconditioned hearts compared with the hearts that did not develop persistent ventricular fibrillation. CONCLUSION: Sevoflurane postconditioning possesses strong antiarrhythmic effect against persistent reperfusion-induced ventricular fibrillation. Anaesthetic postconditioning may have the potential to be an antiarrhythmic therapy for reperfusion-related arrhythmias.
Authors:
Fengjiang Zhang; Gang Chen; Congcong Chen; Min Yan
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  European journal of anaesthesiology     Volume:  26     ISSN:  1365-2346     ISO Abbreviation:  Eur J Anaesthesiol     Publication Date:  2009 Sep 
Date Detail:
Created Date:  2009-08-20     Completed Date:  2010-01-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8411711     Medline TA:  Eur J Anaesthesiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  766-71     Citation Subset:  IM    
Affiliation:
Department of Anesthesiology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.
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MeSH Terms
Descriptor/Qualifier:
Anesthetics, Inhalation / pharmacology*
Animals
Disease Models, Animal
Hemodynamics / drug effects
Ischemic Preconditioning, Myocardial / methods*
Male
Methyl Ethers / pharmacology*
Random Allocation
Rats
Rats, Sprague-Dawley
Reperfusion Injury / complications
Treatment Outcome
Ventricular Fibrillation / drug therapy*,  etiology
Chemical
Reg. No./Substance:
0/Anesthetics, Inhalation; 0/Methyl Ethers; 28523-86-6/sevoflurane

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