Tricuspid Stenosis By Guy P Armstrong, MD, Waitemata District Health Board and Waitemata Cardiology, Auckland Reviewed / Revised Jul 2022 | Modified Sep 2022 View Patient Education Symptoms and Signs Diagnosis Treatment Key Points Tricuspid stenosis (TS) is narrowing of the tricuspid orifice that obstructs blood flow from the right atrium to the right ventricle.