Primary Pulmonary Hypertension is behind multiple hospitalizations and pulmonary transplants. Even though its treatment has been advanced, many patients will not respond well.  The PADN-CFDA randomized 128 patients, 63 received pulmonary denervation (PADN) and 65 went to the control group. Primary end point was 6-minute walk distance test at 6 months.  The populations were similar,…