Terminology: Defining Cardiac Position, Chamber Morphology and Van Praagh Nomenclature
Levocardia: the normal configuration of the base to apex axis of the heart is leftward.
Mesocardia: cardiac mass is midline and the apex is pointing to the midline.
Dextrocardia: the major axis of the heart points to the right of the sternum (dextrocardias are detailed in Chap. 2).