High heart rate: Without lots of information about you, can't guess. Lots of things will normally increase heart rate and lots of abnormal things will increase heart rate. If you're concerned, see your doctor for a history and exam and see if it can be figured out. Among the things that cause high heart rate are hyperthyroid, hypercatechol state, anemia and hypovolemia but there are lots of others.
Answered 1/6/2015
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