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Transient Ischemic Attack l: Introduction

Transient Ischemic Attack l: Introduction

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...

Ischemic Stroke ll: Pathophysiology

Ischemic Stroke ll: Pathophysiology

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...

Ischemic Stroke l: Introduction

Ischemic Stroke l: Introduction

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.

Stroke: Introduction and Types

Stroke: Introduction and Types

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...

Hemorrhagic Stroke ll: Pathophysiology

Hemorrhagic Stroke ll: Pathophysiology

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...

Hemorrhagic Stroke l: Introduction

Hemorrhagic Stroke l: Introduction

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...

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Updated: Jun 1, 2026

A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia

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Published on: August 18, 2015

Cerebral hemodynamic failure presenting as limb-shaking transient ischemic attacks.

Max Nedelmann¹, Maren Kolbe, Daniel Angermueller

¹Department of Neurology, Justus Liebig University Giessen, Giessen, Germany.

Case Reports in Neurology

|May 19, 2011

Summary

Limb-shaking transient ischemic attacks (TIA), a rare condition, can cause limb shaking and speech arrest due to poor brain blood flow. This case highlights how orthostatic stress can trigger TIAs by reducing cerebral perfusion.

Keywords:

Hemodynamic failure Limb-shaking transient ischemic attacks Ultrasound examination

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Area of Science:

Neurology
Vascular Neurology
Cerebrovascular Disease

Background:

Limb-shaking transient ischemic attacks (TIA) are rare neurological events.
They are often associated with insufficient cerebral perfusion due to underlying occlusive cerebrovascular disease.

Observation:

A 64-year-old patient experienced recurrent TIAs with right-sided limb shaking and speech arrest.
Symptoms were frequently triggered by postural changes (orthostatic situations).
Ultrasound revealed provoked symptoms upon sitting up, with decreased middle cerebral artery flow velocities.

Findings:

The patient was diagnosed with limb-shaking TIA.
Diagnostic workup identified left internal carotid artery pseudo-occlusion and poor intracranial collateral status.
This indicated an exhausted vasomotor reserve capacity, leading to perfusion failure.

Implications:

This case illustrates the dynamics of cerebral perfusion failure in limb-shaking TIA.
It underscores the importance of assessing vasomotor reserve in patients with unexplained TIAs.
Understanding these mechanisms is crucial for managing rare cerebrovascular conditions.