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Journal of Endovascular Resuscitation and Trauma Management
Article . 2025 . Peer-reviewed
License: CC BY
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Establishing a Swine Model of Acute Respiratory Distress Syndrome Secondary to Ischemia-Reperfusion Injury Following Acute Limb Ischemia

Authors: Grzegorz Jodlowski; Rebecca Treffalls; May Dvir; Silvana N Wilken; Jonathan J Morrison; Patrick F Walker;

Establishing a Swine Model of Acute Respiratory Distress Syndrome Secondary to Ischemia-Reperfusion Injury Following Acute Limb Ischemia

Abstract

Background: Acute Respiratory Distress Syndrome (ARDS) is a severe complication of ischemia-reperfusion injury (IRI), characterized by acute hypoxemic respiratory failure and high mortality. Acute limb ischemia (ALI) can trigger systemic inflammation leading to ARDS. This study introduces a swine model of ARDS secondary to ALI.Methods: Two Yorkshire swine were used in this study. Animals were anesthetized and subjected to nine hours of hindlimb ischemia via arterial occlusion. The limb was then reperfused and animals monitored through physiological parameters, computed tomography imaging, lung ultrasounds and histology. Data was then analyzed using GraphPad Prism and Analyze software for statistical and imaging evaluation.Results: Baseline measurements confirmed normal vasculature and stability, access was obtained and occlusion delivered. Following nine hours of hindlimb ischemia, reperfusion led to progressive respiratory decline, with worsening oxygenation, decline in the Horowitz index, elevated lactate and potassium levels, and imaging showing early signs of lung injury. Post-mortem analysis confirmed lung congestion, consistent with ARDS.Conclusions: The study demonstrates a novel, easily performed, cost-effective and replicable swine model of ARDS using hindlimb IRI. This model mimics physiological and sterile conditions seen in a clinical setting and serves as a valuable tool for studying ARDS. It also allows for investigation of the systemic inflammatory cascade triggered by peripheral ischemia, mirroring human ARDS cases that occur with distal injuries. Future studies with larger sample sizes and extended critical care periods are recommended to validate the technique and enhance its relevance for experimental applications.

Keywords

ALI, RD1-811, RC666-701, Ischemia Reperfusion Injury, Swine Model, Diseases of the circulatory (Cardiovascular) system, ARDS, Surgery

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Published in a Diamond OA journal