A member asked:

What would cause a fast heart rate and dizziness when standing up?

A doctor has provided 1 answer
Dr. Andrew Lawrence answered

Specializes in Cardiac Electrophysiology

Orthostasis: Without examining you or having any testing, the most likely diagnosis is orthostatic hypotension. It can be related to simple dehydration or sometimes something more serious. You should see you doctor. They can get some information by checking your vital signs while laying down, sitting and standing. After that and a good history and exam you'll have a better idea.

Answered 6/20/2015

5.3k views

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