Seyed Tayeb Moradian,Seyed Mohammad Saeid Ghiasi, A Case of Blunt Chest Trauma and Delayed Severe Tricuspid Regurgitation Surgical Case Reports 2021 2613-5965 http://dx.doi.org/10.31487/j.SCR.2021.08.16 https://www.sciencerepository.org/a-case-of-blunt-chest-trauma_SCR-2021-8-116 Abstract: Blunt chest trauma could lead to the cardiac valves damage. Flail anterior leaflet with severe tricuspid regurgitation is usually due to blunt chest trauma. This condition is very rare and can lead to deformation and failure of the right ventricle. The tricuspid regurgitation is usually easily diagnosed with transthoracic echocardiography. In this study, we want to present a case with delayed tricuspid damage following blunt chest trauma.Keywords: Blunt chest trauma, echocardiography, tricuspid regurgitation