On echocardiography, 52.6% of patients had left atrial > 35 mm (36.87 ± 6.17 mm on average); 100% of patients had PH > 25 mmHg (43.98 ± 11.09 mmHg on average); 24.56% of patients has EF >70% and 5.26% of patients has EF < 50%; Besides, 84.2% of patients have valve regurgitation, and 10.5% of patients has mitral valve prolapse 2.