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(a) Kaplan–Meier curves for the probability of mortality in patients with severe TR and mild/moderate FTR. (b) Kaplan–Meier curves for the probability of mortality in patients with WHO FC I/II and WHO FC III/IV. (c) Kaplan–Meier curves for the probability of mortality stratified by the combination of FTR and WHO FC. FTR, functional tricuspid regurgitation; TR, tricuspid regurgitation; WHO FC, World Health Organization functional class.
