this study indicates that cardiac patients on combined diltiazem-amiodarone therapy may indeed be in a high risk situation in regards to the unexpectedly high blood levels of diltiazem induced : with the ultimate introduction of such side-effects as ( 1 ) the lowering of blood pressure , ( 2 ) a/v block , and ( 3 ) sinus node depression .
C0012373
diltiazem
C0020649
lowering