Disopyramide, procainamide, and quinidine are considered third-line agents in this situation.

这些，双异丙吡胺、普鲁卡因胺和奎尼丁为三线药物。

The clinician may consider disopyramide, procainamide, or quinidine on an individual basis.

临床医师基于个体化考会选用双异丙吡胺、普鲁卡因胺或奎尼丁。