Tachycardia-induced cardiomyopathy accounts for about a third of AF-associated HF hospitalizations in patients without known structural heart disease and is associated with a more favorable prognosis.
In AF-associated HF requiring hospitalization, TIC is the presumed cause in approximately one-third of patients without any previously known structural heart disease. That particular group is characterized by a relatively smaller LV and better prognosis under medical treatment.
Fujino et al. (Mon,) studied this question.