Post-ischemic Brain Edema
Post-ischemic Brain Edema - Related Videos
08:44
Continuous IV Infusion is the Choice Treatment Route for Arginine-vasopressin Receptor Blocker Conivaptan in Mice to Study Stroke-evoked Brain Edema
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Cited by 4 •
2016
Our studies have revealed that the beneficial effects of conivaptan are dependent on the method of delivery after experimental stroke in mice. We have developed a research protocol for delivery of the receptor blocker via IV catheter on stroke-evoked brain edema formation in mice.
03:15
Measuring the Infarct Zone and Brain Edema in a Rat Brain Following Middle Cerebral Artery Occlusion
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2025
This video demonstrates the assessment of the infarct zone and brain edema in brain slices from rats subjected to middle cerebral artery occlusion. Infarcted areas are identified using redox staining, while a blue filter and threshold function in image analysis software quantify the infarct zone and edema in the affected hemisphere.
03:16
Intravenous Delivery of Receptor Blockers to Reduce Brain Edema in a Mouse Model
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2025
Source: Zeynalov, E. et. al., Continuous IV Infusion is the Choice Treatment Route for Arginine-vasopressin Receptor Blocker Conivaptan in Mice to Study Stroke-evoked Brain Edema. J. Vis. Exp. (2016)This video demonstrates the intravenous delivery of an arginine-vasopressin (AVP) receptor antagonist in a mouse model. Transient middle cerebral artery occlusion induces brain edema. An AVP receptor antagonist is administered through a catheter in the left jugular vein, alleviating edema.
08:32
Neurobehavioral Assessments in a Mouse Model of Neonatal Hypoxic-ischemic Brain Injury
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Cited by 12 •
2017
We performed unilateral carotid artery occlusion on postnatal day 7-10 CD-1 mouse pups to create a neonatal hypoxic-ischemic (HI) model and investigated the effects of HI brain injury. We studied neurobehavioral functions in these mice compared to non-operated normal mice.
12:14
Isolation and Flow Cytometric Analysis of Immune Cells from the Ischemic Mouse Brain
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Cited by 80 •
2016
Inflammation plays a central role in the pathogenesis of ischemic stroke. Increasing evidence suggests that it acts as a double-edged sword which exacerbates early brain injury, but also contributes to later repair. This protocol describes the isolation of immune cells from the ischemic brain and their subsequent flow cytometric phenotyping.
FAQs
Energy failure is the initiating intracellular problem in early cytotoxic edema. When ATP production falls, ATP-dependent ion pumps no longer maintain normal ionic gradients, so sodium moves into brain cells and water follows. This cellular swelling can begin before later barrier-related changes, making energy metabolism and ion regulation central to the early phase of post-ischemic injury.
Reperfusion can add a second mechanism of injury. When the blood-brain barrier becomes disrupted after blood flow returns, fluid can move into brain tissue and contribute to vasogenic edema. Restoration of circulation therefore does not automatically end the risk; post-ischemic brain edema may reflect evolving injury as well as the original period of reduced flow.
Cytotoxic and vasogenic edema differ mainly in their immediate location and mechanism. Cytotoxic swelling begins within cells because energy failure disturbs ion pumping, whereas vasogenic edema follows disruption of the blood-brain barrier and involves fluid entering tissue. Their overlap explains why edema can progress over time rather than behave as a single, fixed event.
Clinical recognition focuses on following patients during the period when edema may evolve after ischemia or reperfusion. Monitoring helps identify worsening effects of increased intracranial pressure and neurological injury. The findings guide supportive care and pressure-lowering treatment, while the timing of cytotoxic and vasogenic processes provides a framework for interpreting changing clinical risk.
Post-ischemic brain edema is clinically relevant after ischemic stroke, cardiac arrest, and neurosurgical events. In each setting, reduced or interrupted cerebral blood flow may be followed by edema-related pressure effects and secondary neurological injury. Recognizing the shared mechanisms helps clinicians apply a common monitoring framework while accounting for the different circumstances that produced the ischemia.
Research uses this framework to target more than fluid accumulation alone. Because later edema can involve blood-brain barrier disruption, investigators examine therapies that protect the neurovascular unit and limit secondary brain damage. This focus reflects the evolving nature of injury after ischemia, where cellular energy failure and barrier dysfunction may contribute at different stages.