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Related Concept Videos

Stroke: Introduction and Types01:29

Stroke: Introduction and Types

75
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...
75
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

57
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.
57
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

74
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...
74
Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

41
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...
41
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

57
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...
57
Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

35
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...
35

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A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
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Frailty in stroke.

Fariha Naeem1, Terry Quinn2

  • 1School of Cardiovascular and Medical Sciences, University of Glasgow College of Medical Veterinary and Life Sciences, Glasgow, UK.

Practical Neurology
|May 21, 2024
PubMed
Summary
This summary is machine-generated.

Frailty is common in stroke patients and linked to poor outcomes. Integrating frailty assessment into stroke care can improve patient-centered decision-making and outcomes.

Keywords:
geriatricsstroke

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Area of Science:

  • Gerontology
  • Neurology
  • Public Health

Background:

  • Stroke predominantly affects older individuals, making understanding frailty crucial for stroke specialists.
  • Frailty is increasingly recognized in stroke populations, associated with adverse outcomes.
  • Current stroke research, practice, and policy inadequately address frailty.

Purpose of the Study:

  • To provide a comprehensive primer on frailty within the context of stroke care.
  • To highlight the definition, epidemiology, and prognostic significance of frailty in stroke.
  • To discuss challenges and offer practical guidance for managing frailty in stroke units.

Main Methods:

  • Literature review and synthesis of current evidence on frailty and stroke.
  • Analysis of the implications of frailty for stroke care models.
  • Development of practical recommendations for clinicians.

Main Results:

  • Frailty is prevalent in stroke survivors and predicts poorer outcomes.
  • Frailty-informed care emphasizes person-centered goals and prognosis over purely interventional approaches.
  • Assessment and management of frailty present unique challenges in acute stroke settings.

Conclusions:

  • Frailty is a critical factor in stroke care that requires greater attention.
  • A shift towards frailty-informed, person-centered care is needed in stroke services.
  • Practical guidance is offered to assist clinicians in addressing frailty in stroke patients.