Rat Hemorrhage Model
Rat Hemorrhage Model - Related Videos
07:03
A Low Mortality Rat Model to Assess Delayed Cerebral Vasospasm After Experimental Subarachnoid Hemorrhage
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Cited by 22 •
2013
Aneurysmal subarachnoid hemorrhage (SAH) is bleeding that occurs into the subarachnoid space when an aneurysm ruptures. While the morbidity and mortality from this event has been on a decline due to improved treatment approaches, the risk of vasospasm after subarachnoid hemorrhage continues to be the same as it was several years ago. The importance of establishing a comprehensive and reproducible animal model to identify initiating events of cerebral vasospasm has been the focus of research...
04:35
Establishing a Subarachnoid Hemorrhage Rat Model Induced by Autologous Blood Injection
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2025
This video demonstrates the procedure for establishing a subarachnoid hemorrhage rat model. An anesthetized rat is implanted with probes to measure intracranial pressure and cerebral blood flow. The target site is identified, and the needle is inserted at a pre-chiasmatic position. Autologous blood is then injected into the subarachnoid space, increasing intracranial pressure and decreasing cerebral blood flow, establishing the model.
04:38
Inducing Massive Pontine Hemorrhage in a Rat Model by Autologous Blood Injection
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2025
Source: Tang, X. et. al., Massive Pontine Hemorrhage by Dual Injection of Autologous Blood. J. Vis. Exp. (2021)This protocol describes the controlled infusion of autologous blood into the pontine region of a rat's brain to model massive pontine hemorrhage. The purpose is to simulate a localized brain bleed by increasing localized pressure.
07:57
Integrated Compensatory Responses in a Human Model of Hemorrhage
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Cited by 11 •
2016
The purpose of this protocol is to demonstrate the techniques for measuring compensatory responses to reduced central blood volume using lower body negative pressure as a noninvasive experimental model of human hemorrhage which can be used to quantify the total integration of compensatory mechanisms to blood volume deficit in humans.
08:14
Developing a Clinically Relevant Hemorrhagic Shock Model in Rats
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Cited by 1 •
2024
Hemorrhagic shock kills 1.9 million people worldwide every year. Small animals are frequently used as hemorrhagic shock models but are associated with issues of standardization, reproducibility, and clinical significance, thus limiting their relevance. This article describes developing a new clinically relevant hemorrhagic shock model in rats.
FAQs
Blood accumulation creates a localized mass that can exert pressure on nearby neural tissue. The resulting edema adds further swelling, while inflammatory signaling amplifies the tissue response. Together, these processes help explain how an initial hemorrhagic event can progress to secondary neuronal injury, making them important mechanisms to examine in neuroscience experiments.
The initial bleeding event does not represent the entire tissue response. Secondary neuronal injury reflects damage associated with the hematoma, swelling, and inflammatory signaling that follow blood exposure in the brain. Studying this response helps researchers distinguish the immediate effect of bleeding from later mechanisms that may influence neurological deficits and recovery.
Investigators can assess neurological deficits, cellular damage, and recovery after creating the hemorrhagic injury. These outcomes connect tissue-level effects with functional consequences in the nervous system. Measuring several types of endpoints allows a study to evaluate both the extent of neural injury and whether an intervention is associated with improved recovery.
A typical workflow introduces blood or selected blood components into brain tissue to produce a localized hematoma. Researchers then examine the resulting effects on neural tissue, including edema, inflammatory signaling, cellular damage, and neurological function. The same framework supports follow-up measurements of deficits, recovery, and responses to experimental treatments or rehabilitation strategies.
This model is useful when investigators need to study mechanisms associated with hemorrhagic stroke rather than examine neural injury in isolation. It supports experiments focused on tissue damage, neurological deficits, recovery, and the effects of blood within the brain. Researchers can also use it when evaluating potential neuroprotective treatments or rehabilitation strategies.
Researchers can compare neurological deficits, cellular damage, and recovery in the presence or absence of a candidate treatment or rehabilitation strategy. These measurements provide evidence about whether an intervention is associated with reduced injury or improved functional outcome after experimental hemorrhage. The model therefore links mechanistic study of hemorrhagic damage with therapeutic evaluation in neuroscience.