. "\"The physiological enlargement or overgrowth of all or part of the heart muscle due to an increase in size (not length) of individual cardiac muscle fibers, without cell division, as a result of a disturbance in organismal or cellular homeostasis.\" [GOC:BHF, GOC:mtg_cardiac_conduct_nov11, GOC:mtg_muscle]" . . "cardiac muscle hypertrophy in response to stress" . . . .