[Correlation between the diffusion capacity of the lungs and certain ventilation indices in mitral stenosis]

A study is performed on the correlation relationship between diffusion lung capacity (DLCO) and its components (DM and VC) and the ventilatory indices, VC, FEV1 and FEV 1% VC in 100 patients with mitral stenosis. The determined correlation coefficients and the constructed regression lines show that DLCO and DM have a considerable direct reciprocal relationship with VC and FEVI. The correlation dependence of blood component (VC) with VC, FEV1 and FEV1%VC is low. The close reciprocal relationship of DL CO and DM with VC and FEVI reveals that in patients with mitral stenosis one can judge, to a certain extent, about the severness of the disturbance in the alveolo-capillary diffusion.