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Hypertonic citrate solution as an alternative to modified Euro-Collins' solution for lung preservation
T L Hooper1, M T Jones, D S Thomson
1Department of Cardiothoracic Surgery, Wythenshawe Hospital, Manchester, United Kingdom.
Transplantation
|May 1, 1991
Summary
Hypertonic citrate solution (HTC) shows promise for lung preservation, significantly reducing reperfusion injury compared to Euro-Collins
Area of Science:
- Cardiovascular and Respiratory System
- Transplantation Biology
- Surgical Innovation
Background:
- Modified Euro-Collins' solution (ECS) is the standard pulmonary perfusate.
- Acute ischemic lung injury remains a challenge in lung preservation.
- Hypertonic citrate solution (HTC) is used for renal preservation.
Purpose of the Study:
- To compare the efficacy of HTC versus ECS in preserving lungs during acute ischemic injury.
- To evaluate the impact of different preservation solutions on reperfusion injury.
Main Methods:
- A canine model of acute ischemic lung injury was established.
- Ten beagle dogs underwent lung flushing with either HTC or ECS, followed by ischemia and reperfusion.
- Lung function was assessed via oxygenation, hemodynamics, lung weight, bronchoalveolar lavage, and ultrastructural analysis.
Main Results:
- HTC demonstrated superior arterial oxygenation (PaO2) and lower pulmonary vascular resistance index (PVRI) post-reperfusion.
- Animals preserved with HTC exhibited significantly lower lung weight gain and reduced neutrophil influx.
- Ultrastructural studies indicated less severe lung injury with HTC preservation.
Conclusions:
- HTC significantly reduces reperfusion injury in lung preservation compared to ECS.
- HTC represents a potentially superior alternative to ECS for pulmonary perfusate.
- Further investigation into HTC for lung preservation is warranted.