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Physiological investigations in patients with mitral valvular disease usually have involved, hitherto, the study of circulatory functions such as pulmonary arterial pressure, pulmonary vascular resistance, cardiac output and the changes in them brought about by exercise and following treatment. It is well known, however, that other aspects of pulmonary function are affected in patients with mitral stenosis and this paper deals with these less well-studied functions.

PULMONARY FUNCTION IN MITRAL VALVULAR DISEASE: DISTRIBUTION AND DIFFUSION CHARACTERISTICS IN RESTING PATIENTS 1