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Class 1C Antiarrhythmics do they affect action potential duration?

4K views 4 replies 3 participants last post by  im99 
#1 ·
From Kaplan I learned that class 1C do not change Action Potential duration.
BUT I just read this q in UW which says class 1A, 1C and class 3 all increase QT interval.

Any comments?
 
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