Blue Disease

BLUE DISEASE (Latin: morbus coeruleus, French: maladie bleue), a purely descriptive, collective concept for a group of cardiovascular diseases accompanied by such pronounced cyanosis that patients appear blue or even blackish-blue from a distance. This group includes patients with poor arterialization of blood and simultaneous congestion of the venous network, as well as with hyperplasia and dilation of capillaries, mainly their venous segments. Primarily, Blue Disease is therefore designated as narrowing of the pulmonary artery outlet (stenos. a. pulmonal.) (see Heart defects, congenital). From Blue Disease, in the last decade, it has been possible to isolate a relatively small group of patients with diffuse, systemic, progressive, sclerotic lesions of all branches and branches of the a. pulmonalis. This disease is known under the name of Eyer's disease and has its own rather typical clinic-anatomical picture. Conventionally, Blue Disease can be designated as high degrees of emphysema of the lungs (see Emphysema) and other pneumoscleroses, which sharply impede blood circulation in the lungs and limit the possibility of saturating the blood with oxygen in them.