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Table 3 Reoperation data of IMHA patients

From: Intractable mechanical hemolytic anemia complicating mitral valve surgery: a case series study

 Early IMHALate IMHATotal
Onset time after the first mitral valve operation
 0–6 months10 (100)0 (0)10 (40)
 6–12 months0 (0)0 (0)0 (0)
 1–10 years0 (0)7 (47)7 (28)
 10–20 years0 (0)6 (40)6 (24)
 20–30 years0 (0)2 (13)2 (8)
Reoperation etiologies
 Surgical defects6 (60)0 (0)6 (24)
 Degeneration0 (0)13 (87)13 (52)
 Infection3 (30)1 (7)4 (16)
 Vasculitis1 (10)0 (0)1 (4)
 Trauma0 (0)1 (7)1 (4)
Mitral valve dysfunction type
 Paravalvular leak4 (40)12 (80)16 (64)
 Open-closure dysfunction4 (40)3 (20)7 (28)
 Perforation2 (20)0 (0)2 (8)
Paravalvular leakage location (midpoint)
 2–3 o’clock2 (50)4 (33)6 (38)
 5–8 o’clock2 (50)3 (25)5 (31)
 10–12 o’clock0 (0)3 (25)3 (19)
 Unknown0 (0)2 (17)2 (13)
Reoperation
 Mitral valve replacement8 (80)14 (93)22 (88)
 Mitral valve repair1 (10)0 (0)1 (4)
 Died before reoperation1 (10)1 (7)2 (8)
Valve brand
 CarboMedics2 (25)6 (43)8 (36)
 Medtronics2 (25)3 (21)5 (23)
 St Jude2 (25)2 (14)4 (18)
 Sorin0 (0)1 (7)1 (5)
 Unknown2 (25)2 (14)4 (18)