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Related Concept Videos

Epilepsy and Seizures: Overview01:24

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Epilepsy is a chronic neurological disease marked by recurrent, unpredictable seizures. These seizures are caused by abnormal electrical discharges in the brain, leading to behavior, sensation, or consciousness alterations. They can also cause transient impairment of awareness, interfering with daily activities.
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Regulation of Stroke Volume01:27

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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.
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Cardiac Output and Stroke Volume01:11

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Cardiac output (CO) is an integral aspect of human physiology, reflecting the heart's efficiency and responsiveness to the body's needs. It represents the volume of blood that the left or right ventricle ejects into the aorta or pulmonary trunk each minute. The CO is calculated by multiplying the heart rate (HR)—the number of heartbeats per minute—by the stroke volume (SV)—the amount of blood pumped out with each heartbeat.
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Cardiac output (CO), the amount of blood the heart pumps per minute, is a parameter in cardiovascular physiology determined by stroke volume and heart rate. Stroke volume, the amount of blood pushed from one of the ventricles per heartbeat, is influenced by preload, afterload, and contractility.
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Related Experiment Video

Updated: Feb 11, 2026

Gathering Self-Initiated Rat Behavioral Data to Characterize Post-Stroke Deficits
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[Post-stroke epilepsy].

Federico Rodríguez Lucci1, Matías Alet1, Sebastián F Ameriso1

  • 1Centro integral de Neurología Vascular, FLENI, Buenos Aires, Argentina.

Medicina
|April 17, 2018
PubMed
Summary
This summary is machine-generated.

Stroke is a leading cause of seizures in adults. Early seizures stem from injury, while later ones involve lasting brain changes, with stroke severity and location being key risk factors.

Keywords:
epilepsyseizuresstroke

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Area of Science:

  • Neurology
  • Neuroscience
  • Epileptology

Background:

  • Stroke is the primary cause of new-onset seizures and epilepsy in adult populations.
  • Seizures frequently occur within 24 hours post-stroke, attributed to ischemic injury and neurotransmitter release.
  • Late-onset seizures may develop over time due to permanent brain lesions altering neuronal excitability.

Purpose of the Study:

  • To review the characteristics, risk factors, and management challenges of seizures following stroke.
  • To understand the mechanisms behind early-onset versus late-onset post-stroke seizures.
  • To discuss the difficulties in treatment decisions for post-stroke seizures.

Main Methods:

  • Literature review of population studies on stroke and seizures.
  • Analysis of risk factors, seizure types, and clinical presentation.
  • Discussion of current treatment approaches and challenges.

Main Results:

  • Stroke severity and cortical location are consistent risk factors for both acute and late post-stroke seizures.
  • Most seizures are focal initially, with secondary generalization common in late-onset cases.
  • While most seizures respond to single antiepileptic drugs, controlled trial data on efficacy is limited.

Conclusions:

  • The pathogenesis of early and late seizures post-stroke differs, involving acute injury effects and chronic neuronal changes, respectively.
  • Clinical decisions regarding treatment are complex due to low recurrence rates and lack of absolute predictors for post-stroke epilepsy.
  • Further rigorous trials are needed to establish optimal antiepileptic drug efficacy and treatment guidelines for post-stroke seizures.