atrial flutter to paroxysmal atrial tachycardia with block when digitalis administration was excessive was repeatedly documented in one case (V.K.). Roentgenograms By definition the patients in this series had extreme enlargement of the left atrium, which extended either to the right chest wall or to within approximately one centimeter of it.
parenthood definition, meaning, what is parenthood: the state of being a parent: . Learn more.
DEFINITION of 'Parent Company'. A company that controls other companies by owning an influential amount of voting stock or control. Parent companies will typically be larger firms that exhibit control over one or more small subsidiaries in either the same industry or other industries. Parent companies can be either hands-on or hands-off with subsidiaries, depending on the amount of managerial control given to subsidiary managers.