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Dyspnea - PowerPoint PPT Presentation


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Dyspnea. a subjective experience of breathing discomfort that consists of qualitatively distinct sensations that vary in intensity

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Presentation Transcript
dyspnea
Dyspnea
  • a subjective experience of breathing discomfort that consists of qualitatively distinct sensations that vary in intensity
  • derives from interactions among multiple physiological, psychological, social, and environmental factors, and may induce secondary physiological and behavioural responses
mechanisms of dyspnea
Mechanisms of Dyspnea
  • respiratory sensations
  • consequence of interactions between the efferent, or outgoing, motor output from the brain to the ventilatory muscles (feed-forward) and the afferent, or incoming, sensory input from receptors throughout the body (feedback) as well as the integrative processing of this information occurring in the brain
  • given disease state may lead to dyspnea by one or more mechanisms, some may be operative under some circumstances