Monocrotaline-induced pulmonary hypertension with sufficient tricuspid regurgitation in a rat model

Background and purpose It is well known that monocrotaline (MCT) induces pulmonary hypertension (PH) in rats. This model is very useful for understanding the physiology of PH and developing treatments for PH. However, it is very difficult to estimate pulmonary artery pressure (PAP) in this model. The purpose of this study is to establish a PH model with sufficient tricuspid regurgitation (TR) to evaluate PAP.