All of the following decrease AV conduction accept
Correct Answer: Lignocaine
Description: Refer kDT 6/e p 495 Class IV agents are slow non-dihydropyridine calcium channel blockers. They decrease conductionthrough the AV node, and shoen phase two (the plateau) of the cardiac action potential. They thusreduce the contractility of the hea, so may be inappropriate in hea failure. Class 4 antiarrythmias are calcium channel blockers
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