Ischemic Lesions
Ischemic Lesions - Related Videos
03:09
Establishing a Mouse Model of Neonatal Hypoxic-Ischemic Brain Injury
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2025
The video demonstrates the procedure for creating a mouse model to study neonatal hypoxic-ischemic brain injury. It outlines the steps for surgically inducing ischemia and subjecting the animal to hypoxia to exacerbate brain damage. Finally, it shows how to assess the resulting brain lesions, ensuring the mouse model is prepared for further scientific investigation.
14:54
Rat Model of Photochemically-Induced Posterior Ischemic Optic Neuropathy
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Cited by 2 •
2015
The goal of this protocol is to photochemically induce ischemic injury to the posterior optic nerve in rat. This model is critical to studies of the pathophysiology of posterior ischemic optic neuropathy, and therapeutic approaches for this and other optic neuropathies, as well as of other CNS ischemic diseases.
08:47
The Hypoxic Ischemic Encephalopathy Model of Perinatal Ischemia
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Cited by 48 •
2008
The postnatal rat model for hypoxic-ischemic brain injury is a well-established model of human neonatal hypoxic ischemic encephalopathy (HIE). In this article, we describe the model of HIE in post-natal rat pups.
08:35
Demonstration of the Rat Ischemic Skin Wound Model
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Cited by 32 •
2015
The rat, due to its size, availability, and rather docile behavior, has been utilized as a research model for many years. The goal of this protocol is to utilize the rat as an ischemic skin wound healing model to provide valuable insight into the pathophysiology of chronic wounds.
12:00
A Simplified Technique for Producing an Ischemic Wound Model
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Cited by 22 •
2012
We have developed a minimally invasive technique to create a rabbit ischemic ear wound model by dividing the central artery and nerve and the cranial neurovascular bundle. A subcutaneous tunnel then cuts all subcutaneous tissues. This procedure causes minimal skin disruption and can be safely used in diabetic animals.
FAQs
Progression depends on whether perfusion returns before cellular injury becomes irreversible. Early oxygen shortage disrupts cellular metabolism and depletes energy stores, producing injury that may still be reversible. Continued inadequate flow can lead to cell death, necrosis, and infarction. This sequence explains why the duration and severity of reduced perfusion matter when clinicians assess an ischemic lesion.
An arterial narrowing reduces blood delivery, whereas a blockage can interrupt it more severely. In either situation, the resulting oxygen deficit affects the supplied tissue, but the clinical consequences depend on the affected location and how much tissue is involved. Comparing the vascular problem with the lesion’s distribution helps connect the observed injury to an underlying vascular disorder.
Location, extent, and age provide complementary information. Location identifies the organ or tissue at risk, extent indicates how much tissue has been affected, and age helps distinguish a recent lesion from an older one. Together, these features support diagnosis, treatment decisions, prognosis, and assessment of whether tissue injury is recovering or progressing.
Evaluation combines clinical assessment with imaging rather than relying on a single finding. Clinicians consider the patient’s condition and use imaging to identify the lesion’s location and extent and to help estimate its age. Interpreting these findings together supports diagnosis and provides information needed for treatment decisions, prognosis, and monitoring of tissue status.
Ischemic lesions are particularly relevant when vascular injury affects the brain, heart, or limbs. In stroke, myocardial infarction, and peripheral vascular disease, identifying the lesion helps connect impaired perfusion with organ dysfunction. The same core assessment remains useful across these conditions, while the lesion’s location and extent determine its clinical significance in the affected organ.
Follow-up assessment focuses on whether tissue damage is stabilizing, recovering, or extending. Clinical evaluation and imaging can compare the lesion’s observed features over time, while its location, extent, and age continue to inform prognosis. This monitoring helps clinicians judge the tissue’s course and recognize evidence of recovery or further damage that may affect ongoing treatment decisions.