Finger Versus Earlobe Pulse Oximetry During the 6-Minute Walk Test in Interstitial Lung Disease

interstitial lung disease (ild), idiopathic pulmonary fibrosis (ipf), progressive pulmonary fibrosis, connective tissue disease-associated interstitial lung disease, interstitial lung disease due to connective tissue disease (disorder), pulse oximetry, earlobe oximetry, finger oximetry, oxygen saturation, spo2, six-minute walk test, exercise desaturation