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Related Concept Videos

Ischemic Stroke l: Introduction01:15

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.
Ischemic Stroke ll: Pathophysiology01:15

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...
Transient Ischemic Attack l: Introduction01:26

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...
Upper GI Series: Barium Swallow01:24

Upper GI Series: Barium Swallow

The Barium Swallow Study, or a Barium Esophagogram, is a diagnostic imaging method used to visualize the upper gastrointestinal (GI) tract, including the esophagus, stomach, and small intestine. It employs barium sulfate, a radiopaque contrast material, to provide clear images of the upper digestive system, helping to identify abnormalities, diseases, or structural issues.
Purpose and Procedure
Patients undergoing this procedure ingest a liquid containing barium sulfate with a chalky...
Stroke: Introduction and Types01:29

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: Pathophysiology01:29

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...

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Related Experiment Video

Updated: May 28, 2026

Adapting Human Videofluoroscopic Swallow Study Methods to Detect and Characterize Dysphagia in Murine Disease Models
08:32

Adapting Human Videofluoroscopic Swallow Study Methods to Detect and Characterize Dysphagia in Murine Disease Models

Published on: March 1, 2015

Swallowing disorders after ischemic stroke.

Gabriela Camargo Remesso1, Márcia Maiumi Fukujima, Ana Lúcia de Magalhães Leal Chiappetta

  • 1Department of Emergency Medicine and Evidence-Based Medicine, Federal University of São Paulo (UNIFESP), São Paulo SP, Brazil. gabrielaremesso@uol.com.br

Arquivos De Neuro-Psiquiatria
|November 2, 2011
PubMed
Summary
This summary is machine-generated.

Swallowing disorders affect nearly 20% of ischemic stroke patients, with most cases being mild. Older age, diabetes, and brainstem lesions predict these swallowing difficulties.

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Adapting Human Videofluoroscopic Swallow Study Methods to Detect and Characterize Dysphagia in Murine Disease Models
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A Middle Cerebral Artery Occlusion Technique for Inducing Post-stroke Depression in Rats

Published on: May 22, 2019

Area of Science:

  • Neurology
  • Clinical Medicine
  • Public Health

Background:

  • Ischemic stroke is a leading cause of long-term disability.
  • Dysphagia (swallowing disorders) is a common complication following stroke.
  • Understanding the incidence and predictors of post-stroke dysphagia is crucial for patient management.

Purpose of the Study:

  • To determine the occurrence of swallowing disorders in patients after ischemic stroke.
  • To identify risk factors associated with the development of dysphagia post-stroke.
  • To characterize the severity and recovery patterns of swallowing disorders.

Main Methods:

  • Retrospective analysis of 596 patient medical files diagnosed with ischemic stroke.
  • Exclusion criteria included cardiac issues and hospital stays exceeding 14 days.
  • Data collected on demographics, risk factors, dysphagia incidence, severity, recovery, and lesion location.

Main Results:

  • Nearly 20% of patients (19.6%) experienced swallowing disorders, predominantly mild (91.5%).
  • Common risk factors included hypertension (79.4%), diabetes (36.7%), and smoking (42.7%).
  • Brainstem lesions were present in 6.8% of patients, and 13.3% of patients died.

Conclusions:

  • Swallowing disorders are a significant concern post-ischemic stroke, affecting approximately one-fifth of patients.
  • Mild dysphagia is most common, with a high rate of spontaneous recovery (87.1%) within a few months.
  • Older age, diabetes mellitus, and brainstem lesions are identified as key predictors for developing swallowing disorders after ischemic stroke.