Abstract
Although usually described as “cor triatriatum,” no hearts have been described thus far with three atrial chambers. The lesions accounted for using this terminology have division of either the right or left atrial chambers. Division of the left atrium is much more common. This is produced by presence of an oblique fibromuscular shelf, which divides the atrium into pulmonary venous and vestibular chambers. The oval fossa can relate to either chamber, so shunting in the presence of a deficient atrial septum, or a patent oval foramen, can be to either of the divided components. Division of the right atrium is produced by persistence in postnatal life of the valves that interpose, during development, between the systemic venous sinus and the remainder of the right atrium. This chapter describes the anatomic features, diagnostic findings, and therapeutic options for the various lesions producing division of the atrial chambers.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
