Any process that activates or increases the frequency, rate or extent of AV node cell action potential.
Synonyms:
exact_synonym:
positive regulation of AV node cardiac muscle cell action potential; positive regulation of atrioventricular node cardiac muscle cell action potential; up regulation of AV node cardiac muscle cell action potential; up regulation of AV node cell action potential; up regulation of atrioventricular node cardiac muscle cell action potential; upregulation of AV node cardiac muscle cell action potential; upregulation of AV node cell action potential; upregulation of atrioventricular node cardiac muscle cell action potential
narrow_synonym:
activation of AV node cardiac muscle cell action potential; activation of AV node cell action potential; activation of atrioventricular node cardiac muscle cell action potential