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Related Concept Videos

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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Assessment of Radial Pulse
The radial pulse, located at the wrist, is often the preferred site for assessing peripheral pulse because of its accessibility and dependability. The process of determining the radial pulse involves several steps:
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Proper measurement of leg blood pressure is a critical skill for healthcare providers, ensuring precise and reliable readings. When performed correctly, this procedure informs patient care and enhances the efficacy of interventions. The following text outlines step-by-step guidelines to measure blood pressure in the leg, providing clarity and ease of understanding for practitioners.
Preparation:
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Vascular Spasm01:16

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The vascular phase, also known as vasospasm, is the initial stage of hemostasis, crucial for preventing excessive bleeding when a blood vessel is injured. After a vessel is cut, nerves in the damaged area trigger pain and other sensory impulses. Simultaneously, the smooth muscles in the vessel wall contract, resulting in a vascular spasm. This contraction reduces the vessel's diameter at the injury site, slowing or stopping blood loss through the vessel wall. Vascular spasms typically last...
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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.
In an average resting adult male, the typical cardiac...
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Assessment of blood pressure in brachial artery(two-step method)01:23

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Measuring blood pressure is a fundamental skill in healthcare that aids in diagnosing and monitoring hypertension and other cardiovascular conditions. An aneroid sphygmomanometer, commonly used in clinical settings, offers a manual and precise method for blood pressure measurement. The technique for using this instrument involves specific steps that must be carefully executed to ensure accuracy. The following detailed description outlines a two-step technique for assessing blood pressure using...
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Related Experiment Video

Updated: Jun 6, 2025

A Fibrin-Enriched and tPA-Sensitive Photothrombotic Stroke Model
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A Fibrin-Enriched and tPA-Sensitive Photothrombotic Stroke Model

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A Stroke With Pride and Prejudice: A Case Report.

Samuel I Udo1

  • 1Emergency Medicine, Buckinghamshire Healthcare NHS Trust, Buckinghamshire, GBR.

Cureus
|November 29, 2024
PubMed
Summary

Dyspraxia, a motor disorder, can result from striatocapsular infarction syndrome (SIS), a type of stroke. Early recognition through comprehensive neurological exams is crucial for diagnosis and managing this condition.

Keywords:
carotid arteriescorpus striatumdyspraxiajane austenmagnetic resonance angiographypride and prejudicestriatocapsular infarction syndromestrokesubcortical infarct

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Area of Science:

  • Neurology
  • Neuroscience
  • Clinical Medicine

Background:

  • Dyspraxia impacts movement, coordination, and motor skills, affecting daily activities.
  • Striatocapsular infarction syndrome (SIS) is a specific form of dyspraxia linked to subcortical strokes, primarily affecting upper limbs.

Observation:

  • A female writer presented with headaches and sudden difficulty in fine motor tasks.
  • Her writing sample showed significant disorderliness, indicative of impaired coordination.
  • Clinical examination revealed visual field defects and finger-nose dyspraxia.

Findings:

  • A CT head scan confirmed a stroke in the right parietal lobe, consistent with SIS.
  • The case highlights challenges in the early recognition of certain striatocapsular strokes.

Implications:

  • Comprehensive neurological examination and neuroimaging are vital for diagnosing stroke-related dyspraxia.
  • Understanding SIS improves diagnostic accuracy for stroke complications.
  • Prognosis for SIS is variable and requires further definition, often involving thromboembolic events.