Any process that increases the force with which the cardiac muscles of the heart pump blood through the circulatory system as a result of the presence of epinephrine or norepinephrine in the bloodstream or released from the nerve endings.
Synonyms:
exact_synonym:
increased force of heart contraction by adrenaline-noradrenaline; increased force of heart contraction by epinephrine-norepinephrine; increased strength of cardiac contraction by epinephrine-norepinephrine
related_synonym:
increased inotropy by epinephrine-norepinephrine; positive regulation of heart contraction by adrenaline-noradrenaline; positive regulation of heart contraction by epinephrine-norepinephrine