The study evaluates the technique of non-drug treatment of residual pulmonary hypertension in patients with chronic thromboembolic pulmonary hypertension after pulmonary thromboendarterectomy.

The best strategy of treatment patients with chronic thromboembolic pulmonary hypertension is pulmonary thromboendarterectomy. In 5-30% of cases after pulmonary thromboendarterectomy residual pulmonary hypertension is persisted. The technique of radiofrequency pulmonary artery denervation in patients with idiopathic pulmonary arterial hypertension (type I) is known and was assessed during clinical investigation. In this study radiofrequency pulmonary artery denervation technique may be applied in patients with residual pulmonary hypertension after pulmonary thromboendarterectomy (type IV)

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.