https://www.selleckchem.com/pr....oducts/crt-0105446.h
Fibrous continuity between the tricuspid and pulmonary valves was not always seen with perimembranous defects, particularly when there were bilateral infundibulums. Fibrous continuity between the leaflets of the tricuspid and mitral valves, in contrast, proved a unifying characteristic of the perimembranous defect. The combination of concordant atrioventricular and discordant ventriculo-arterial connections is best described simply as 'transposition', with precision provided when details are given of atrial arrangement and the relat