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Related Concept Videos

Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

15
A hemorrhagic stroke is an acute neurological event that occurs when a weakened cerebral blood vessel ruptures, allowing blood to accumulate within or around the brain. The sudden release of blood forms a focal hematoma that increases intracranial pressure, displaces neural tissue, and can obstruct cerebrospinal fluid pathways. These effects may be compounded by intraventricular extension of the hemorrhage, cerebral edema, or compression of adjacent structures, all of which contribute to...
15
Stroke: Introduction and Types01:29

Stroke: Introduction and Types

39
A stroke is an acute neurological event caused by the sudden disruption of cerebral blood flow, leading to rapid loss of neuronal function. Neurons depend on continuous oxygen and glucose supply, so even brief interruptions can cause irreversible injury within minutes. Strokes are classified into ischemic and hemorrhagic types.Ischemic StrokeIschemic strokes are most common and occur due to arterial occlusion, depriving brain tissue of oxygen and nutrients. This leads to energy failure, ionic...
39
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

14
A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...
14
Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

13
A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...
13
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

29
Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
29
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

42
An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
42

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Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model
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Headache and acute stroke.

Dara G Jamieson1, Natalie T Cheng, Maryna Skliut

  • 1Weill Cornell Medical College, New York Presbyterian Hospital, 428 East 72nd Street, Suite 400, New York, NY, 10021, USA, dgj2001@med.cornell.edu.

Current Pain and Headache Reports
|August 7, 2014
PubMed
Summary
This summary is machine-generated.

Prominent headaches, including migraine with aura, are linked to increased stroke risk. Certain neurological disorders and pregnancy also raise the risk of both ischemic and hemorrhagic stroke.

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Area of Science:

  • Neurology
  • Vascular Neurology
  • Neurocritical Care

Background:

  • Prominent headaches, such as migraine with aura, are associated with increased risks of ischemic and hemorrhagic stroke.
  • Several neurological disorders, including central nervous system vasculitis, posterior reversible encephalopathy syndrome, reversible cerebral vasoconstriction syndrome, and cerebral venous thrombosis, present with severe headaches and elevate stroke risk.
  • Pregnancy and the postpartum period represent a critical time for the overlap of new-onset headaches and heightened stroke risk.

Purpose of the Study:

  • To review the association between headache disorders and stroke risk.
  • To highlight specific neurological conditions that increase the risk of both ischemic and hemorrhagic stroke.
  • To emphasize the heightened stroke risk during pregnancy and postpartum, particularly in the context of new-onset headaches.

Main Methods:

  • Literature review of studies investigating headache disorders and stroke.
  • Analysis of clinical presentations of stroke, differentiating between ischemic and hemorrhagic types.
  • Examination of risk factors for stroke, including specific neurological syndromes and the peripartum period.

Main Results:

  • Migraine with aura and cerebral arterial and venous diseases are identified as conditions increasing stroke risk.
  • Central nervous system vasculitis, posterior reversible encephalopathy syndrome, reversible cerebral vasoconstriction syndrome, and cerebral venous thrombosis are linked to increased risk of ischemic and hemorrhagic stroke.
  • Hemorrhagic strokes are more frequently associated with distinct headaches and focal neurological symptoms compared to ischemic strokes.

Conclusions:

  • Disorders causing prominent headaches significantly increase the risk of stroke.
  • Early recognition and management of these headache disorders and associated neurological conditions are crucial for stroke prevention.
  • The peripartum period requires careful consideration of headache symptoms as potential indicators of increased stroke risk.