this report deals with increased cardiac mass in the light of the following variables : normal ventricular growth ( embryo , fetus , neonate and child ) , the response to work loads ( hemodynamic stress ) and hypoxia , the cell responses of hyperplasia ( increase in cell number ) , hypertrophy ( increase in cell size ) and the type of cell ( muscle or connective tissue ) , the age or maturity of the myocardium at the time the hemodynamic or hypoxic stress is imposed , and the biochemistry , ultrastructure and functional morphology ( modeling ) of the ventricles in response to volume or pressure overload .
C0021289
neonate
C0008059
child