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why is nausea/vomiting and diaphoresis associated with M.I.?

Discussion in 'Emergency Medicine' started by MedicinePowder, Jul 24, 2006.

  1. MedicinePowder

    MedicinePowder Senior Member
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    anyone with chest pain gets asked: any n/v, diaphoresis etc etc. what's the pathophys behind developing n/v and diaphoresis in m.i.?
     
  2. spyderdoc

    Physician Moderator Emeritus Lifetime Donor Verified Account 15+ Year Member

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    My guess would be vagal nerve stimulation....
     
  3. southerndoc

    southerndoc life is good
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    I think you're onto something.
     
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  4. Blue Dog

    Blue Dog Fides et ratio.
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    Traditionally, nausea and vomiting were thought to be related to inferior-wall MIs. However, some studies have suggested that these symptoms are related to infarct size, not location.

    Diaphoresis is caused by activation of the sympathetic nervous system from reduced cardiac output and neurohumoral compensatory mechanisms (baroreceptors, RAAS, etc.)
     
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  5. leviathan

    leviathan Drinking from the hydrant
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    I'll take human physiology for 500, Alex.
     
  6. mikecwru

    mikecwru M.D. = Massive Debt
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    I agree with everything said before. You can get sweaty from vagal stimulation. You can also get sweaty from sympathetic stimulation. So it need not be an inferior MI.

    mike
     

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