Abstract: As the golden standard for measuring pulmonary artery pressure, the right heart catheter method needs to undergo three important physiological bends to reach the pulmonary artery. In order to measure pulmonary artery pressure rapidly and effectively in rats, it is necessary to improve the material, tip angle and corresponding operation of the right cardiac catheter. In this paper, the modified right heart catheterization method to measure pulmonary artery pressure in rats is summarized in order to provide references and ideas for the researchers in this field. 

Key words: Modified right heart catheterization, Pulmonary arterial pressure, Pulmonary arterial hypertension, Rats