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Related Concept Videos

Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

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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...
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Stroke: Introduction and Types01:29

Stroke: Introduction and Types

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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...
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Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

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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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Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

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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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Cytotoxic Edema: Pathophysiology01:21

Cytotoxic Edema: Pathophysiology

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Cytotoxic edema is a form of cerebral edema characterized by intracellular swelling of neurons, astrocytes, and other glial cells. It develops when the mechanisms responsible for maintaining ionic gradients across the cell membrane become impaired. Under normal physiological conditions, the sodium–potassium ATPase actively transports sodium ions out of the cell and potassium ions into the cell, preserving osmotic balance and enabling electrical signaling. This pump requires a continuous...
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Regulation of Stroke Volume01:27

Regulation of Stroke Volume

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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.
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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Continuous IV Infusion is the Choice Treatment Route for Arginine-vasopressin Receptor Blocker Conivaptan in Mice to Study Stroke-evoked Brain Edema
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Hyponatremia in stroke.

Sheikh Saleem1, Irfan Yousuf1, Azhara Gul1

  • 1Department of Neurology, SKIMS, Soura, Srinagar, Jammu and Kashmir, India.

Annals of Indian Academy of Neurology
|April 23, 2014
PubMed
Summary

Hyponatremia affects 35% of stroke patients, with Syndrome of Inappropriate Antidiuretic Hormone secretion (SIADH) being more common than Cerebral Salt Wasting Syndrome (CSWS). Hyponatremia, particularly CSWS, negatively impacts stroke outcomes, necessitating close serum sodium monitoring.

Keywords:
Hyponatremiastrokesyndrome of inappropriate antidiuretic syndrome

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Area of Science:

  • Neurology
  • Endocrinology
  • Internal Medicine

Background:

  • Hyponatremia is a frequent complication in neurological disorders, often linked to SIADH or CSWS.
  • Stroke patients are particularly susceptible to electrolyte imbalances.
  • Understanding the incidence and causes of hyponatremia in stroke is crucial for patient management.

Purpose of the Study:

  • To determine the incidence and etiological causes of hyponatremia in hospitalized stroke patients.
  • To investigate the association between hyponatremia and stroke outcomes.

Main Methods:

  • A prospective study involving 1000 stroke patients over two years.
  • Evaluation for hyponatremia (serum sodium <130 meq/l).
  • Statistical analysis using the Chi-square test.

Main Results:

  • The incidence of hyponatremia was 35.3% (353/1000 patients).
  • SIADH accounted for 67% of cases, while CSWS accounted for 33%.
  • Hyponatremia significantly worsened stroke outcomes, especially when caused by CSWS.

Conclusions:

  • Hyponatremia is prevalent in stroke patients, with SIADH and CSWS as primary causes.
  • CSWS is associated with poorer stroke outcomes compared to SIADH.
  • Close monitoring of serum sodium and prompt etiological diagnosis are vital for improving stroke patient management and reducing mortality.