Research Article

Minimally Invasive Mitral Valve Repair with Artificial Chordae: Insights from a 6-Year Single-Center Study

Table 3

Perioperative features.

All repair (N = 90)Simple repair (N = 41)Intermediate-to-complex repair (N = 49) value

Etiology of mitral valve0.791
 FED72 (80.0)34 (82.9)38 (77.6)
 Barlow16 (17.8)6 (14.6)10 (20.4)
 Forme fruste2 (2.2)1 (2.4)1 (2.0)
No chordae per patient2 [1.3; 3.0]2 [1.0; 3.0]2 [2.0; 3.0]0.688
Type of artificial chordae0.472
 Single30 (33.3)15 (36.6)15 (30.6)
 Loop50 (55.6)22 (53.7)28 (57.1)
 Single and loop10 (11.1)4 (9.8)6 (12.2)
Annuloplasty ring0.235
 26 mm2 (2.2)0 (0.0)2 (4.1)
 28 mm21 (23.3)12 (29.3)9 (18.4)
 30 mm27 (30.0)13 (31.7)14 (28.6)
 32 mm24 (26.7)7 (17.1)17 (34.7)
 34 mm12 (13.3)6 (14.6)6 (12.2)
 36 mm4 (4.4)3 (7.3)1 (2.0)
Edge-to-edge repair6 (6.7)1 (2.4)5 (10.2)0.214
Commissuroplasty17 (18.9)4 (9.8)13 (26.5)0.059
Concomitant procedures9 (10.0)4 (9.8)5 (10.2)0.286
 ASD closure1 (11.1)0 (0.0)1 (20.0)
 Maze procedure6 (66.7)2 (50.0)4 (80.0)
 Tricuspid repair2 (22.2)0 (0.0)2 (50.0)
CPB time (mins)139.0 [120.5; 158.5]137.0 [123.0; 159.0]136.0 [120.0; 158.0]0.709
ACC time (mins)90.0 [80.0; 104.0]90.0 [77.0; 101.0]89.0 [80.0; 100.0]0.874
SAM7 (7.8)6 (14.6)1 (2.0)0.044

Data are presented as mean ± standard deviation, median (interquartile range), or n (%). ACC, aortic cross-clamp; ASD, atrial septal defect; CPB, cardiopulmonary bypass; FED, fibroelastic deficiency; SAM, systolic anterior motion.