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Defects in peripheral oxygen utilization following trauma and shock
Archives of Surgery (Chicago, Ill. : 1960)
|October 1, 1981
Summary
Shock and trauma can cause capillary issues leading to poor oxygen use. Specific therapies targeting microembolization and reperfusion syndrome may improve oxygen utilization in post-trauma patients.
Area of Science:
- Physiology
- Trauma Research
- Vascular Biology
Background:
- Shock and trauma can lead to capillary stasis and ischemia.
- Resuscitation may trigger reperfusion syndrome, causing edema and further capillary blockage.
- Tissue hypoxia can occur due to impaired peripheral oxygen utilization post-trauma.
Purpose of the Study:
- To investigate the mechanisms of impaired peripheral oxygen utilization following shock and trauma.
- To evaluate the role of reperfusion syndrome and microembolization in this defect.
- To assess the efficacy of hypertonic mannitol and imidazole in reversing the defect.
Main Methods:
- Utilized an isolated canine hind limb model to simulate peripheral circulation.
- Induced reperfusion syndrome and microembolization to study their effects.
- Administered hypertonic mannitol and imidazole to assess their therapeutic potential.
Main Results:
- Interstitial edema alone did not replicate the observed defect in oxygen utilization.
- Both reperfusion syndrome and microembolization successfully reproduced the impaired peripheral oxygen utilization.
- Hypertonic mannitol and imidazole demonstrated efficacy in reversing the defect caused by reperfusion syndrome and microembolization, respectively.
Conclusions:
- Impaired peripheral oxygen utilization in resuscitated post-trauma patients is likely due to microembolization and reperfusion syndrome.
- These defects may be exacerbated by tissue edema.
- Specific therapies, such as hypertonic mannitol and imidazole, show promise for treating these conditions.