Straddling or overriding tricuspid valve is a rare congenital tricuspid valve malformation characterized by the tricuspid valve that overrides the ventricular septum and communicates with both ventricles as part of the tension apparatus of the valve crosses the ventricular septal defect and is attached in the left ventricle. The anomaly occurs with other congenital heart defects (transposition of great vessels left ventricle outflow tract obstruction double outlet right ventricle hypoplastic right ventricle) which determine the main clinical manifestation.
Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview. Reference: Access aggregated data from Orphanet at Orphadata. Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http://www.orphadata.org. Data version April 2026
Newly diagnosed with
Straddling or overriding tricuspid valve?
Our RARE Concierge Services Guides are available to assist you by providing information, resources and connections as you navigate your rare disease journey.
Advocacy Organizations
Heart of a Giant Foundation
The mission of the HGF is to achieve better health outcomes for heart diseases and related chronic health conditions in our communities and enhance the quality of life through health education, care support, and connection to community resources.
Don't see your organization here. Let us know here.
Clinical Trials
For a list of clinical trials in this disease area, please click here.