Table 1.

Primary characteristics of the patients

Characteristics	All patients	Event-free group	Event-positive group	p value
Number	186	155	31
Demographic
Age (in years)	46.97 ± 11.67	46.43 ± 11.54	49.65 ± 12.15	0.08
Female sex	152 (81.7%)	125 (80.6%)	27 (87%)	0.19
Clinical
NYHA functional class > 2	142 (76.3%)	120 (77.4%)	22 (70.9%)	0.57
AF cardiac rhythm	48 (25.8%)	32 (20.6%)	16 (51.6%)	< 0.001
Antibiotic (penicillin) prophylaxis	61 (32.7%)	55 (35.4%)	6 (19.3%)	0.03
Echocardiographic (Pre-PTMC)
E.F (%)	55.60 ± 4.45	55.69 ± 4.21	55.16 ± 5.55	0.11
Left atrial diameter(cm)	4.48 ± 0.58	4.46 ± 0.61	4.56 ± 0.43	0.10
TMPG (mmHg)	15.43 ± 6.86	15.28 ± 6.76	16.21 ± 7.4	0.64
MVA (cm2)	1.03 ± 0.20	1.02 ± 0.20	0.99 ± 0.21	0.55
MR ≥ degree 1	112 (60.2%)	91 (58.7%)	21 (67.7%)	0.38
Wilkins score	8.12 ± 1.21	8.02 ± 1.20	8.61 ± 1.14	0.021
sPAP (mmHg)	43.69 ± 12.9	42.38 ± 12.45	50.33 ± 13.28	0.003
Echocardiographic (Post-PTMC)
IMVA (cm2)	2.03 ± 0.37	2.08 ± 0.35	1.76 ± 0.35	< 0.001
IMR: degree 2	35 (18.8%)	23 (14.8%)	12 (38.7%)	0.002
ITMPG (mmHg)	5.49 ± 1.59	5.43 ± 1.56	5.75 ± 1.73	0.45

Values are mean ± SD or number (percentage in total). NYHA New York Heart Association, AF atrial fibrillation, EF ejection fraction, TMPG mean trans-mitral pressure gradient, MVA mitral valve area, MR mitral regurgitation, sPAP systolic pulmonary arterial pressure, IMVA immediate post-PTMC mitral valve area, IMR immediate post-PTMC mitral regurgitation, ITMPG immediate post-PTMC mean trans-mitral pressure gradient