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Related Concept Videos

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

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...
Atherosclerosis IV: Nursing Management01:23

Atherosclerosis IV: Nursing Management

Nursing management for a patient with arteriosclerosis involves a comprehensive approach focusing on lifestyle modification, disease monitoring, education, and symptomatic care. Here is an overview of effective nursing strategies:Assessment and Monitoring: Initial and ongoing assessments are crucial. Nurses must document the patient's medical history, including any hypertension, diabetes, hyperlipidemia, and other cardiovascular diseases. Assessments also cover family history and lifestyle...
Regulation of Stroke Volume01:27

Regulation of Stroke Volume

The regulation of stroke volume, which is the amount of blood the heart pumps out during each heartbeat, is critical for maintaining a healthy circulatory system. Stroke volume is influenced by three main factors: preload, contractility, and afterload.
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...

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Related Experiment Video

Updated: Jun 3, 2026

A Middle Cerebral Artery Occlusion Technique for Inducing Post-stroke Depression in Rats
04:38

A Middle Cerebral Artery Occlusion Technique for Inducing Post-stroke Depression in Rats

Published on: May 22, 2019

Factors Underlying Stroke Recovery Variation by Neighborhood Socioeconomic Status.

Eric L Stulberg1, Robert M Miller2, Nicholas Hartman2

  • 1Department of Neurology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania.

JAMA Network Open
|June 2, 2026
PubMed
Summary

Neighborhood socioeconomic status significantly impacts stroke recovery, with lower status linked to poorer outcomes. Key factors like treatment access and neighborhood resources did not significantly explain these disparities.

Related Experiment Videos

Last Updated: Jun 3, 2026

A Middle Cerebral Artery Occlusion Technique for Inducing Post-stroke Depression in Rats
04:38

A Middle Cerebral Artery Occlusion Technique for Inducing Post-stroke Depression in Rats

Published on: May 22, 2019

Area of Science:

  • Neurology
  • Public Health
  • Health Services Research

Background:

  • Lower neighborhood socioeconomic status (nSES) is linked to worse stroke recovery.
  • Factors mediating this association require identification for therapeutic targeting.

Purpose of the Study:

  • To determine if hyperacute treatment, healthcare service density, transportation, or walkability mediate the relationship between nSES and stroke recovery.

Main Methods:

  • Causal mediation analyses were performed on a population-based stroke cohort (BASIC) in Nueces County, Texas.
  • Participants (aged ≥45) were followed for 90 days post-stroke, with neighborhood characteristics defined by census tracts.
  • Outcomes included functional status (ADL/IADL), depressive symptoms (PHQ-8), and quality of life (SS-QoL).

Main Results:

  • Higher nSES was associated with better outcomes across all measures.
  • Evaluated mediators (treatment, service density, access, walkability) did not significantly mediate the nSES-stroke recovery association.
  • Mediation effects were modest, with no statistically significant mediating factors identified.

Conclusions:

  • In this urban, biethnic cohort with mild strokes, higher nSES correlated with better recovery.
  • The disparities in stroke recovery by nSES were not significantly explained by the investigated mediators.
  • Further research is needed to explore other potential mediating factors, such as treatment timing and post-discharge care.