What class of anti-arrhythmic is procainamide?

Question:

2005-12-13 17:25:38 UTC

I found two different answers - class IA and class III? Please let me know what the correct answer is.

One answer:

2005-12-13 17:34:16 UTC

Class IA, according to my Mosby's Drug Guide for Nurses, but it's the fifth edition updated for 2004.

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