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Changes in inflammatory mediators during orthotopic liver transplantation
M C Bellamy1, H F Galley, N R Webster
1Intensive Care Unit, St James's University Hospital, Leeds.
British Journal of Anaesthesia
|December 9, 1997
Summary
Liver transplant reperfusion causes hemodynamic changes and increased cytokines. Inflammatory mediators like leukotrienes, thromboxane B2, and platelet activating factor are altered, potentially explaining the observed hemodynamic disturbances during liver transplantation.
Area of Science:
- Transplantation immunology
- Cardiovascular physiology
- Hepatology
Background:
- Graft reperfusion following transplantation triggers inflammatory responses and hemodynamic alterations.
- Understanding the interplay between hemodynamic changes and inflammatory mediators is crucial for managing post-transplant complications.
Purpose of the Study:
- To investigate the relationship between hemodynamic responses and circulating inflammatory mediators after graft reperfusion in liver transplant recipients.
- To elucidate the role of inflammatory mediators in the hemodynamic disturbances observed during liver reperfusion syndrome.
Main Methods:
- Prospective study involving 10 consecutive patients undergoing orthotopic liver transplantation.
- Monitoring of hemodynamic parameters (systemic vascular resistance index, cardiac index) and plasma concentrations of inflammatory mediators (cytokines, leukotrienes, thromboxane B2, platelet activating factor) post-reperfusion.
Main Results:
- Systemic vascular resistance index significantly decreased (P = 0.011) and cardiac index increased (P = 0.038) after reperfusion, consistent with reperfusion syndrome.
- Global increases in cytokine concentrations were observed alongside these hemodynamic changes.
- Plasma leukotriene levels decreased, while thromboxane B2 and platelet activating factor remained elevated post-reperfusion.
Conclusions:
- Reperfusion-mediated alterations in inflammatory mediators correlate with the characteristic hemodynamic disturbances of liver reperfusion syndrome.
- These findings suggest that inflammatory mediators play a significant role in the pathophysiology of hemodynamic instability after liver transplantation.