German Heart Center Berlin (DHZB) 1 article published in JoVE Medicine A Model of Reverse Vascular Remodeling in Pulmonary Hypertension Due to Left Heart Disease by Aortic Debanding in Rats Pengchao Sang1,2,3, Mariya M. Kucherenko1,2,3, Juquan Yao2, Qiuhua Li2, Szandor Simmons2,3, Wolfgang M. Kuebler*2,3, Christoph Knosalla*1,3,4 1Department of Cardiothoracic and Vascular Surgery, German Heart Center Berlin (DHZB), 2Institute of Physiology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 3DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, 4Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health The present protocol describes a surgical procedure to remove ascending-aortic banding in a rat model of pulmonary hypertension due to left heart disease. This technique studies endogenous mechanisms of reverse remodeling in the pulmonary circulation and the right heart, thus informing strategies to reverse pulmonary hypertension and/or right ventricular dysfunction.