Table 3. Echocardiographic and cardiac catheterization parameters at baseline and after PTMC .

	Preprocedural	Post procedural	P Value
Echocardiographic data
MVA by planimetry, cm2	0.94 ± 0.27	1.49 ± 0.39	< 0.001
MVA by PHT, cm2	0.98 ± 0.26	1.56 ± 0.38	< 0.001
Mean PG, mmHg	12.74 ± 6.11	6.12 ± 2.9	< 0.001
RVSP, mmHg	54.78 ± 23.10	44.42 ± 18.50	< 0.001
Cardiac catheterization
Mean PG, mmHg	12.63 ± 6.71	5.87 ± 3.79	< 0.001
SPAP, mmHg	61.74 ± 21.43	49.53 ± 17.19	< 0.001
Mean PAP, mmHg	40.43 ± 12.94	31.66 ± 11.32	< 0.001

Abbreviations: MVA , Mitral valve area; PAP , Pulmonary arterial pressure; PHT , Pressure-half time; PG , pressure gradient; PTMC , Percutaneous mitral commissurotomy; RVSP , Right ventricular systolic pressure; SPAP , Systolic pulmonary arterial pressure.