Table 3.

Patients' Echocardiographic Variables by ERO Level

Variables	ERO <20 mm2 (n = 24)	ERO ≥20 mm2 (n = 16)	P Value
Tenting area, cm2	0.61 ± 0.24	0.99 ± 0.29	< 0.001a
Mitral annular area, cm2	6.44 ± 0.98	7.13 ± 0.95	0.032a
LVEDV, mL	70.49 ± 18.52	88.06 ± 33.36	0.039a
LVESV, mL	28.51 ± 12.28	45.74 ± 33.62	0.065
Spherical index at systole	0.40 ± 0.09	0.49 ± 0.09	0.004a
LVEF, %	61.23 ± 7.53	52.64 ± 14.46	0.041a
Edge length of mitral tetrahedron, mm
DAP	26.92 ± 2.02	27.88 ± 2.03	0.150
DAL	47.71 ± 5.51	49.06 ± 5.73	0.458
DAM	50.88 ± 5.38	52.13 ± 5.16	0.469
DPL	46.63 ± 4.42	47.81 ± 6.12	0.480
DPM	46.42 ± 4.79	46.38 ± 4.87	0.979
DML	20.29 ± 2.65	25.38 ± 5.92	0.004a

Abbreviations: D_AL, the distance between the root of lateral papillary muscle and the anterior annulus; D_AM, the distance between the root of medial papillary muscle and the anterior annulus; D_AP, distance between the anterior and posterior annulus; D_ML, the interpapillary muscle roots distance; D_PL, the distance between the root of lateral papillary muscle and the posterior annulus; D_PM, the distance between the root of medial papillary muscle and the posterior annulus; ERO, effective regurgitant orifice; LVEDV, left ventricular end‐diastolic volume; LVEF, left ventricular ejection fraction; LVESV, left ventricular end‐systolic volume.

Data are presented as mean ± standard deviation.

^a P < 0.05 indicates a significant difference between ERO levels.