[Attempt at a pathologoanatomic classification of pulmonary hypertension].

General classification of pulmonary hypertension has been made on the basis of primary and greatest changes in the parts of pulmonary circulation and includes over 50 different heart and lung diseases, as well as varieties described in recent years. The classification consists of 5 main groups: arterio-arteriolar (or "precapillary"), capillary, venular-venous (or "postcapillary"), arterio-venous, and obscure. Capillary forms of pulmonary hypertension including diseases with a reduced capillary bed of the lungs as well as varieties of interstitial sclerosis and hyperergic reactions with alveolar-capillary blocking have been restored. A new group of arterio-venous pulmonary hypertensions includes congenital heart diseases and vascular diseases characterized by extra- and intrapulmonary shunts with hypervolemia of the pulmonary vessels.