Chronic pulmonary heart (HPS) stands for presence of right ventricular hypertrophy with or without right ventricular failure, arising as a consequence of chronic bronchial diseases, lung, pulmonary artery, or severe deformation of the thoracic skeleton. Excludes the pulmonary hypertension as a result of heart disease of left cavities, and congenital heart disease. During the evolution of chronic pulmonary heart, distinguished three stages: a) uncomplicated pneumopathology, b) compensated chronic pulmonary heart and c) decompensated chronic pulmonary heart. Lung ventilation is the process of moving air from the external environment to the alveolar and back, and its ultimate aim is alveolar ventilation space. This process takes place through active action - inspirium and passive - expirium, which causes the lungs to the basic position of rest. The disorders of ventilation lung function can be obstructive and restrictive, and there are often mixed forms with predominantly obstructive or predominantly restrictive pulmonary function disorder. These disorders were particularly expressed in patients with chronic decompensated pulmonary heart, what indicates this work. We studied 40 patients and found low values of vital capacity (VC) and forced exspirium volume in the first second (FEV ), with normal values of 1 Tiffeneau index, which speaks to the fact that respondents with decompensated chronic pulmonary heart have mixed ventilation insufficienty, ìainly restricted type heavy degree. 

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