Interventional Treatment of Residual Pulmonary Hypertension in Patients After Pulmonary Thromboendarterectomy

Inclusion Criteria: * presence of residual pulmonary hypertension in patients after pulmonary thromboendarterectomy according to right heart catheterization: mean pulmonary artery pressure \> 25 mm Hg or pulmonary vascular resistance \> 400 dyn x sec x cm-5 Exclusion Criteria: * no evidence of residual pulmonary hypertension in patients after pulmonary thromboendarterectomy (mean pulmonary artery pressure \<25 m Hg). * refusal of a patient to participate in the study. * the presence of severe concomitant diseases of the cardiovascular system and lungs, leading to pulmonary hypertension * the presence of other severe comorbidities that may result in death within a year.