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Updated: Jul 13, 2026
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Bilateral Common Carotid Artery Occlusion as an Adequate Preconditioning Stimulus to Induce Early Ischemic Tolerance to Focal Cerebral Ischemia
Published on: May 9, 2013
Anesthetic preconditioning combined with postconditioning offers no additional benefit over preconditioning or
David I Deyhimy1, Neal W Fleming, Ian G Brodkin
1Department of Anesthesiology and Pain Medicine, University of California, Davis, CA, USA.
Anesthesia and Analgesia
|July 25, 2007
Summary
Sevoflurane postconditioning protects heart muscle after ischemia as well as preconditioning. Combining both methods offers no extra benefit for myocardial protection.
Area of Science:
- Cardiology
- Anesthesiology
- Cardiovascular Research
Background:
- Anesthetic preconditioning and postconditioning show promise in reducing myocardial infarct size.
- These methods offer protection comparable to ischemic preconditioning.
- The study investigated the combined effect of sevoflurane preconditioning and postconditioning.
Purpose of the Study:
- To determine if combining sevoflurane preconditioning and postconditioning provides enhanced myocardial protection.
- To compare the efficacy of sevoflurane preconditioning, postconditioning, and their combination in preserving heart function and reducing infarct size.
Main Methods:
- Langendorff-perfused rat hearts were used, divided into control, preconditioning, postconditioning, and combined groups.
- Left ventricular function and infarct size were measured post-reperfusion.
- Intracellular pH, Na(+), and Ca(2+) levels were assessed using nuclear magnetic resonance.
Main Results:
- All treatment groups showed significant improvements in left ventricular function and reduced myocardial infarct size compared to controls.
- Intracellular Na(+) and Ca(2+) levels were significantly decreased in all treatment groups.
- No significant differences in infarct size or functional recovery were observed between the individual treatment groups and the combined group.
Conclusions:
- Sevoflurane postconditioning is effective in protecting myocardial function following global ischemia.
- Combining sevoflurane preconditioning and postconditioning does not provide additional cardioprotective benefits compared to either method alone.
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