[Pulmonary functional criteria for evaluating the evolution of diffuse interstitial pneumopathy under treatment].

It was studied the variation of the pulmonary volumes, of the gaseous transfer through the alveolocapillary membrane and of the indications of pulmonary elasticity on 40 patients with diffuse interstitial lung disease (PID), examined at intervals of 3-6 months, for 2-3 years during the treatment. The levels of the pulmonary elasticity parameters have signaled more frequently the modification (improvement or worsening) of the pulmonary functional state than those of the pulmonary volumes or of the gaseous transfer. Hence the proposal of including the tests for elastic recoil within the ensemble of pulmonary functional investigations through which are studied the effects of the treatment prescribed in PID.