In 1873 Kussmaul reported that in patients with constrictive pericarditis, the expected inspiratory collapse of neck veins was replaced by increased inspiratory distension.
AR in operated tetralogy of Fallot due to: dilatation of aortic root, lack of support due to subaortic VSD, valvular deformation due to retraction of surgical patch.
Sequelae of congenital heart diseases in the adult: arrhythmias related to scars and myocardial dysfunction, valvular disease, persistent shunts, pulmonary or systemic vascular disease etc.