<prompt> All of the following are the actions of beta blockers in heart failure except:Decrease mortalityAntagonism of vasoconstrictionPrevent pathological remodelingPrevent cardiac arrhythmias  <response>: Ans. B. Antagonism of vasoconstrictionBeta blockers actually cause vasoconstriction via antagonizing the vasodilation caused by beta 2 receptor. Rest all are the pharmacological actions of beta blockers. 