the mechanism by which amiodarone suppresses cardiac arrhythmias is not known and may relate to prolongation of refractoriness in all cardiac tissues , suppression of automaticity in some fibers , minimal slowing of conduction in fast channel-dependent tissue , or to interactions with the autonomic nervous system , alterations in thyroid metabolism or other factors .
C0002598
amiodarone
C0003811
cardiac arrhythmias