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Related Concept Videos

Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

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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
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

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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 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
Ischemic Heart Disease: Overview01:17

Ischemic Heart Disease: Overview

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Ischemic heart disease occurs when the heart's blood supply dwindles, causing an ominous lack of oxygen and nutrients. This deficiency, stemming from reduced or obstructed blood flow, spells danger, leading to heart muscle damage and dysfunction.
Atherosclerosis, the primary malefactor, orchestrates this dangerous condition. It manifests as the accumulation of fatty deposits, akin to insidious plaques, within arterial walls. As time elapses, these plaques metamorphose, hardening and...
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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

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A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
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Epidemiology of transient ischemic attack.

Yoshihiro Kokubo1

  • 1Department of Preventive Cardiology, National Cerebral and Cardiovascular Disease, Osaka, Japan.

Frontiers of Neurology and Neuroscience
|October 26, 2013
PubMed
Summary

Transient ischemic attack (TIA) incidence rises with age and is higher in men. Risk factors for TIA remain poorly understood, but the ABCD(2) score aids in predicting stroke risk after a TIA event.

Area of Science:

  • Epidemiology
  • Neurology
  • Public Health

Background:

  • Limited epidemiologic data exist on transient ischemic attack (TIA) prevalence and incidence.
  • Understanding TIA incidence and subsequent stroke risk is crucial for public health strategies.

Purpose of the Study:

  • To review the incidence of TIA across different demographics and geographic regions.
  • To examine the incidence of subsequent stroke events following TIA.
  • To explore potential risk factors and prognostic indicators for TIA and post-TIA stroke.

Main Methods:

  • Review of existing epidemiologic data on TIA incidence in Europe, the United States, and Japan.
  • Analysis of TIA incidence rates by age group, gender, and geographic location.
  • Examination of stroke risk data following TIA, including the utility of the ABCD(2) score and the influence of family history and seasonality.

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Main Results:

  • TIA incidence increases significantly with age and is higher in men than women across all age groups studied.
  • Incidences vary geographically, with Europe and the US showing higher rates than Japan.
  • The ABCD(2) score can predict individual risk and aid in patient triage; stroke risk is elevated post-TIA, particularly in hospitalized patients.
  • Family history of stroke does not appear to predict ischemic stroke risk after TIA.
  • Evidence for seasonal variation in TIA incidence is limited and inconsistent, with some reports suggesting peaks in autumn/spring and Mondays.

Conclusions:

  • TIA incidence is strongly influenced by age and gender, with notable geographic variations.
  • While the ABCD(2) score is a useful tool, further research is needed to fully elucidate TIA risk factors and prognostic indicators.
  • Current evidence on the impact of family history and seasonal variations on TIA incidence remains limited.