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(A) The proportion of tricuspid regurgitation (TR) grade at different points relative to operation. (B) Mean tricuspid regurgitation (TR) grade at different points relative to operation. Follow-up echocardiography examinations were performed at 1 week, and 1, 3, 5, 7 and 10 years postoperative. Pre: preoperative. *P < 0.001 compared with the preoperative grade.
