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. 2009 May 29;136(6):1503–1513. doi: 10.1378/chest.08-1233

Figure 5.

Figure 5

Freedom from TE according to stratification by anticoagulation quality up to TEs (A and B) and by patients and prosthesis-related factors (C and D). Stratification was performed according to an INR SD ≥ 1 or < 1 (A), to INR-average ≥ 3.5 or < 3.5 (B), to a history of cardiac surgery (C), and to implantation of a ball prosthesis (D). Note the absence of a significant difference in TE rates between the strata defined by anticoagulation variability or intensity, whereas the large difference in TE rates is observed according to the implantation of a ball and non-ball mitral valve prosthesis.