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Related Concept Videos

Stroke: Introduction and Types01:29

Stroke: Introduction and Types

7
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...
7
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

7
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.
7
Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

4
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...
4
Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

2
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...
2
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

6
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...
6
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

5
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...
5

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Sex Stratified Neuronal Cultures to Study Ischemic Cell Death Pathways
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Acute stroke symptoms: do differences exist between sexes?

Monica Acciarresi1, Pierpaolo De Luca1, Valeria Caso1

  • 1Stroke Unit and Division of Cardiovascular Medicine, University of Perugia, Perugia, Italy.

Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association
|December 3, 2014
PubMed
Summary

Men with stroke are more likely to experience postural instability, while women often present with dysphagia. These sex-based differences in stroke symptoms suggest variations in stroke location and severity.

Keywords:
Epidemiologyrisk factorssexstrokestroke subtypessymptoms

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Area of Science:

  • Neurology
  • Stroke Research
  • Clinical Medicine

Background:

  • Previous research indicates sex-based differences in stroke symptom presentation.
  • This study investigates the clinical relevance of these observed differences in a large patient cohort.

Purpose of the Study:

  • To assess the relevance of sex-based differences in stroke symptoms.
  • To identify independent predictors of stroke symptoms, including sex.

Main Methods:

  • Prospective inclusion of patients with acute stroke or transient ischemic attack from the Perugia Stroke Registry (2005-2012).
  • Statistical analysis using Chi-square or Fisher exact tests for initial associations.
  • Multivariable regression analysis to determine independent predictors of symptoms, incorporating sex.

Main Results:

  • 1072 men and 811 women were analyzed; women were older at stroke onset (average 75.4 years vs. 70.1 years).
  • Women presented with more severe strokes (higher NIHSS scores); men were more prone to posterior strokes.
  • Multivariate analysis linked postural instability to male sex and dysphagia to female sex.

Conclusions:

  • Stroke presentation shows minimal sex-based differences, with exceptions in specific symptoms.
  • Men are more likely to exhibit postural instability; women are more likely to experience dysphagia.
  • Stroke location and severity appear to be associated with patient sex.