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Chronic thromboembolic pulmonary hypertension (CTEPH) developed recurrent thromboembolia as a result of structural changes in the pulmonary vascular bed occurs. This growing with the increase in pulmonary artery pressure and vascular resistance changes in pressure depending on the load, resulting in right heart failure. Morbidity and mortality is high and it is a progressive disease of acquired cardiopulmonary vascular bed.
Successful pulmonary thromboendarterectomy (PEA) definitive treatment of the disease process. This process short-and long-term pulmonary vascular bed, and right ventricular echocardiographic and hemodynamic benefit has been shown that. The treatment of patients with pulmonary hypertension clinic to evaluate the response of a 6-minute walk test (6MWT) for many years, are used. PEA is carried out in this study of patients with CTEPH echocardiography before and after surgery and within walking distance to 6th month 6MWT tests with the changes and echocardiographic parameters investigated the correlation. Our investigation, 30 patients admitted to the Marmara University of Thoracic Surgery were included, between 2009 and 2011. After PEA results of the study, a significant increase in 6-MWT (242.8 ± 112.8 vs 423.6 ± 89.1 meters, p <0.001). End of the test borg fatigue and dyspnea scores decreased from 6±2 to 4±2 (p<0.001) and 7±2 to 4±2 (p<0.001). And the end of the test oxygen saturation increased from 88±6 to 91±3(p=0.02).Systolic pulmonary artery pressure (SPAP) and right ventricular (RV) diameter, a significant decrease (86 ± 25.1 mm Hg vs 41.9 ± 15.6 mmHg, p <0.001 and 42.1 ± 10.1 mm vs 35.3 ± 5.6 mm, p<0.001). Degree of change in the meaning of the other parameters were not observed. However, with the change in 6-MWT deviation of tricuspid annular systolic (TAPSE) was considered statistically significant change in (r: 0.52, p=0.004).