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Dr. Andrew Rynne
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Dr. Andrew Rynne

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Exp 50 years

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What Causes Sudden Lightheadedness,blurred Vision,black Out And Palpitations?

I was sitting in my chair and randomly felt lightheaded, my vision blurred, and I blacked out a little, then I could feel my heart pounding hard through my chest, and now it is back to normal, but I still feel lightheaded. Should I be concerned about this? It happens to me sometimes.
Fri, 7 Feb 2014
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Cardiologist,  's  Response
Dear patient,

Thanks for the query. There can be very benign causes of such symptoms such as vasovagal or neurogenic syncope, to others that are more worrisome, such as a cardiac arrhythmia. To distinguish between them, a clinician should obtained a very detailed history of the circumstances in each episode, conduct a physical exam to look for signs of cardiovascular disease and finally order basic tests based on the suspicion, such as ECG, til table test or rarely an echocardiogram. If an arrhythmia is suspected, then an event monitor may be indicated.


Hope that helps, wish you the best,

Dr Brenes-Salazar MD
Mayo Clinic MN
Cardiology
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What Causes Sudden Lightheadedness,blurred Vision,black Out And Palpitations?

Dear patient, Thanks for the query. There can be very benign causes of such symptoms such as vasovagal or neurogenic syncope, to others that are more worrisome, such as a cardiac arrhythmia. To distinguish between them, a clinician should obtained a very detailed history of the circumstances in each episode, conduct a physical exam to look for signs of cardiovascular disease and finally order basic tests based on the suspicion, such as ECG, til table test or rarely an echocardiogram. If an arrhythmia is suspected, then an event monitor may be indicated. Hope that helps, wish you the best, Dr Brenes-Salazar MD Mayo Clinic MN Cardiology