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Related Concept Videos

Regulation of Stroke Volume01:27

Regulation of Stroke Volume

5.3K
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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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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Cardiac Output II: Effect of Stroke Volume on Cardiac Output01:22

Cardiac Output II: Effect of Stroke Volume on Cardiac Output

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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.
Preload
Preload refers to the initial elongation of the cardiac myocytes before contraction and is related to the volume of blood filling the heart at the end of diastole, or end-diastolic volume. The...
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The Mouse Stroke Unit Protocol with Standardized Neurological Scoring for Translational Mouse Stroke Studies
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Dysarthria following Stroke.

Kristie A Spencer1, Katherine A Brown1

  • 1Department of Speech and Hearing Sciences, University of Washington, Seattle, Washington.

Seminars in Speech and Language
|January 24, 2018
PubMed
Summary
This summary is machine-generated.

Stroke survivors with dysarthria experience impaired communication. Speech-language pathologists (SLPs) evaluate and manage this condition, focusing on understanding its physiologic basis to guide effective treatment and improve quality of life.

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Area of Science:

  • Neurology
  • Speech-Language Pathology

Background:

  • Dysarthria frequently occurs after stroke, significantly impacting communication and life quality.
  • Speech-language pathologists (SLPs) are crucial in managing dysarthria in stroke survivors.

Purpose of the Study:

  • To outline the role of SLPs in evaluating and rehabilitating stroke-related dysarthria.
  • To emphasize the importance of understanding the physiologic underpinnings of dysarthria for diagnosis and treatment.

Main Methods:

  • Comprehensive speech evaluation, including mechanism examination, subsystem screening, perceptual assessment, and intelligibility measurement.
  • Development of management strategies focusing on compensatory techniques and physiologic support.

Main Results:

  • Understanding the physiologic cause of altered speech (e.g., weakness, incoordination) aids differential diagnosis and treatment planning.
  • Management involves optimizing communication through compensatory strategies and physiologic support.

Conclusions:

  • SLPs are essential for addressing dysarthria post-stroke.
  • Effective management requires a thorough evaluation and tailored treatment strategies, including patient and caregiver education.