The purpose of this study is to determine if the study drug, inhaled nitric oxide (iNO), when given and breathed through an investigational study device, the INOpulse, may help treat patients at risk for pulmonary hypertension-pulmonary fibrosis. Another purpose of this study is to determine if using the INOpulse delivery device (drug and device combination) improves the levels of moderate to vigorous physical activity (for example walking, climbing stairs, household chores and cleaning and, exercise and hobbies), as measured by actigraphy (a non-invasive way to monitor rest/activity).
