Intracranial Hemorrhage
Intracranial Hemorrhage - Related Videos
08:18
Intracranial Pressure Monitoring In Nontraumatic Intraventricular Hemorrhage Rodent Model
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Cited by 1 •
2022
Monitoring intracranial pressure in rodent models of nontraumatic intraventricular hemorrhage is not common in the current literature. Herein, we demonstrate a technique for measuring intracranial pressure, mean arterial pressure, and cerebral perfusion pressure during intraventricular hemorrhage in a rat animal model.
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.
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...
07:02
Autologous Blood Injection to Model Spontaneous Intracerebral Hemorrhage in Mice
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Cited by 28 •
2011
The autologous blood injection model of intracerebral hemorrhage in mice described in this protocol uses the double injection technique to minimize risk of blood reflux up the needle track, no anticoagulants in the pumping system, and eliminates all dead space and expandable tubing in the system.
02:29
Modeling Drug-Induced Hemorrhage in Zebrafish Larva
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2025
In this video, fertilized zebrafish embryos are dechorionated under a stereo microscope and then exposed to a cholesterol synthesis inhibitor, leading to the development of blood vessel ruptures and brain hemorrhages in the larvae. Hemorrhagic larvae, identifiable by distinct red spots, are subsequently separated under a microscope for further analysis.
FAQs
The principal categories are intraparenchymal, subarachnoid, subdural, and epidural hemorrhage. Their distinction depends on where blood accumulates: within brain tissue, in the subarachnoid space, or between the brain and its protective membranes. Identifying the location helps clinicians characterize the event and connect imaging findings with the mechanisms producing neurological impairment.
Accumulating blood produces mass effect, meaning it occupies space and compresses nearby tissue. The hemorrhage can also trigger inflammation and reduce blood flow to surrounding brain regions. These interacting effects may impair neurological function and create secondary injury, making the consequences depend not only on the initial rupture but also on the response of nearby tissue.
Mass effect physically stresses surrounding brain tissue, while inflammation can amplify local damage. At the same time, reduced blood flow limits the oxygen and resources available to affected regions. Together, these processes can worsen neurological impairment beyond the immediate bleeding site, which is why clinical management focuses on limiting both the hemorrhage and its downstream effects.
Neuroimaging provides urgent diagnostic evaluation of bleeding within the skull and helps identify its anatomical category. By showing whether blood is intraparenchymal, subarachnoid, subdural, or epidural, imaging supplies information that supports treatment planning. In medicine, this rapid characterization is important because the hemorrhage location and associated pressure effects guide clinical decisions.
Early management aims to limit ongoing bleeding, control increased intracranial pressure, and prevent secondary brain injury. These goals address both the source of immediate damage and the harmful consequences of accumulated blood, inflammation, and reduced blood flow. Treatment is therefore guided by the need to protect neurological function while clinicians evaluate the hemorrhage with neuroimaging.
Determining whether bleeding is intraparenchymal, subarachnoid, subdural, or epidural gives clinicians a structured basis for diagnosis and management. The classification identifies the involved anatomical space and helps frame the expected mass effect and neurological risk. This information supports decisions aimed at controlling intracranial pressure, limiting bleeding, and reducing further brain injury.