摘要Tricuspid valve regurgitation is a rare complication of blunt chest trauma.Approximately 150 cases have been reported since first being described by Todd et al in 1848.1 During the past few decades traumatic tricuspid regurgitation has been reported with increasing frequency,which may in part be attributed to more patients surviving blunt chest trauma as well as improved diagnostic imaging studies,such as echocardiography.The incidence of traumatic tricuspid regurgitation is likely underestimated since chronic,isolated tricuspid insufficiency may be well tolerated in some patients who experience few or no symptoms after the traumatic event.2 Furthermore,some patients may not recall antecedent chest trauma unless specifically questioned.Most cases of traumatic tricuspid regurgitation are secondary to blunt chest trauma.1