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

1.这些情况下，双异丙吡胺、因胺和奎尼丁可为三线药物。

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

2.临床于个体化考虑可能会选用双异丙吡胺、因胺或奎尼丁。