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

Table 5.

Mitral Mechanical Valve-Related Complications According to the Type of Prosthesis

Ball Valve (n = 37)
Disk or Bileaflet Valve (n = 75)
Conditions No. Linearized Rate (95% CI) 8-Yr Freedom, %* No. Linearized Rate (95% CI) 8-Yr Freedom, %* p Value
TE 21 8.5 (5.3–13.0) 50 ± 9 13 3.1 (1.7–5.3) 81 ± 5 < 0.0001
Bleeding 10 3.1 (1.4–5.3) 80 ± 7.5 18 6.3 (4.1–9.2) 75 ± 6 0.35
Endocarditis 1 0.3 (0.0–1.7) 97 ± 3 3 0.6 (0.1–1.8) 95 ± 4 0.49
Periprosthetic regurgitation 4 1.2 (0.3–3.1) 90 ± 6 4 0.8 (0.2–2.0) 94 ± 4 0.67
Mitral valve reoperation 3 0.8 (0.2–2.3) 94 ± 4 4 0.8 (0.2–2.0) 90 ± 5 0.99
Any mitral valve complication 27 12.3 (8.1–17.9) 33 ± 8 29 8.8 (5.9–12.6) 50 ± 8 0.03

Values are given as the mean ± SD.