Clinical Impact of Home Oxygen Saturation Measurement in Patients With Interstitial Lung Disease: Quality of Live, Health Care Use, Score of Anxiety, Depression and Dyspnea and Physical Activity Level

The use of saturometry at home is more and more widespread in patients suffering from interstitial pulmonary diseases (IPD), the patients seeing it as reassurance and a concrete way to follow the evolution of their disease. However, there are no studies evaluating the real clinical benefit of taking saturation at home in this population. In addition, clinical experience seems rather to demonstrate an increase in the anxiety level and the number of clinically unnecessary consultations related to the use of this measure.

The secondary objectives are to determine the impact of this measurement on: (1) the health care use (telephone calls, medical consultations and hospitalizations), (2) dyspnea score, (3) the anxiety and depression score (HADS score) and (4) the physical activity level. The exploratory objectives will be to determine if the measurement of saturation at home makes it possible to (1) predict the occurrence of acute exacerbations of fibrosis, (2) effectively predict the decline in respiratory function tests and (3) 1-year mortality. The investigator will also assess whether this measure makes it possible to screen patients with oxygen therapy needs at home. The investigator hypothesize that measuring oxygen saturation at home will lead to a significant deterioration in quality of life, an increase in the use of health care, a significant increase in the rate of anxiety and depression, dyspnea and a decrease in the physical activity level.