title: [Clinical and instrumental characteristics of primary high altitude arterial pulmonary hypertension].
abstract: The clinical pattern of primary high altitude pulmonary arterial hypertension observed in permanent residents of mountain regions is described. The diagnostic value of some non-invasive instrumental methods in primary high altitude pulmonary artery hypertension is analysed: electro- and vectorcardiography, rheopulmonography, and indirect pulmonary artery pressure determination. It is suggested to distinguish the labile, stable and decompensated forms of the disease on the basis of its clinical and functional peculiarities. The criterion for the initial two forms consists in the persistence of the pulmonary artery pressure elevation, while the latter form is established when the high altitude cor pulmonale gets decompensated. Functional vasoconstriction of the pulmonary resistive vessels was shown to play an important role in the genesis of the disease: the administration of 0.5 mg of nitroglycerine and a 5-minute oxygen inhalation caused a positive dynamics in the indices of the pulmonary rheogramme and a reduction of the pulmonary artery pressure, which did not reach the level of the plane inhabitants, though.
mesh_terms: D000328:Adult; D000531:Altitude; D001794:Blood Pressure; D001795:Blood Pressure Determination; D002908:Chronic Disease; D006334:Heart Function Tests; D006801:Humans; D006976:Hypertension, Pulmonary / Q000503:physiopathology*; D000860:Hypoxia / Q000503:physiopathology; D008168:Lung / Q000098:blood supply; D008875:Middle Aged; D010992:Plethysmography, Impedance
vernacular_title: Kliniko-instrumental'naia kharakteristika pervichnoĭ vysokogornoĭ arterial'noĭ legochnoĭ gipertonii