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A member asked:
What is a procainamide challenge testing for?
A doctor has provided 1 answer
Reveals Arrhythmia : Procainamide is a local anesthetic that acts on sodium channels. In the heart muscle sodium channels play a central role in the excitability of myocardial cells. So if you are given a bolus of this drug, it has the ability to increase the detection rate of an arrhythmia without losing predictive value. Meaning if it can produce an arrhythmia you may have a condition that needs to be treated.
Answered 6/30/2014
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What class of anti-arrhythmic is the drug procainamide?
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