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Week 9 Perfusion Notes.docx - Week 9: Perfusion Flow of...

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Week 9: PerfusionFlow of blood through arteries and capillaries, delivering nutrients and oxygen to cells andremoving cellular waste.Impaired Profusion:blood supply being reduced or completely stopped.Factors for Adequate PerfusionSufficient fluids (blood volume)Adequate blood pressurePatent vesselsAdequate hydrostatic pressure and capillary permeabilityAdequate cardiac functioning- pump functionAdequate gas exchange (O2 and CO2 exchange)SVR- systemic vascular resistancePerfusion CategoriesCentral perfusion- generated by cardiac output (blood ejected by heart in 1 minute 4-6 L),stroke volume (amount of blood ejected each contraction) SV x HR = CO, systole,diastole, preload (end volume of amount of blood at end of diastole), and afterload (SVR)Too much preload = blood in lungs, enlarge heart, & HFLocal/tissue perfusion- ArteriesCapillaries (swelling, stroke, diabetes)Changes in PerfusionAcute illness: MI, shock, strokeChronic Disorders: hypertension, HFConditions involving perfusionNeurologic- interferes w/ blood flow to brainPulmonary- impairs blood flow to lungsCardiovascular- impairs blood flow to heart, veins, and arteries

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Term
Fall
Professor
NoProfessor
Tags
SVR systemic, R sided heart failure

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