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Never heard of it, but looked it up and it stands for Muscle Sympathetic Nerve Activity....looks like it can be measured during baroflexture testing, etc. One article I could find that defined it stated it is "a direct measure of sympathetic nervous outflow". Don't know if this helps, but I couldn't find much more unless I read a ton of articles....and right now I don't think I would have understood them anyway :) !

Sheridan

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thanks sheridan and nina! they did the MSNA testing on me. not sure what the results were, and like you said sheridan, that is OUT OF MY LEAGUE TO GRASP! I'M JUST THE CARDIO GIRL! :)

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I included a pubmed link in my prior post--click on it for an article that's about msna testing and baroflex response.

Nina

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http://ajpheart.physiology.org/cgi/content...act/284/4/H1198

This is technical, cardio girl, but it appears to be a test to determine the connection between hypovolemia, sensitivity of the pressure receptors (the body's response to a dropping BP), and the sympathetic system response. I guess they are seeing if you over- or under-react to BP changes. I forget if you have hypovolemia, but don't recall your mentioning it (but I am old), so maybe they are checking to see where the culprit(s) are.

OLL

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