The study of new biological heart valves with the "easy change" system, including an assessment of the basic hemodynamic characteristics of the prosthesis, complications associated with valve implantation, and general mortality

The study of new biological heart valves with the "easy change" system, including an assessment of the basic hemodynamic characteristics of the prosthesis, complications associated with valve implantation, and general mortality. Antithrombotic therapy after new biological valve prosthesis is studied. Transesophageal ultrasound is used for assessment of aortic strain, left ventricular strain, and 3D reconstruction of implanted bioprosthesis. The quality of life of patients is assessed using SF36 questionnaire. Heart failure after surgery is assessed by six-minute walking test and plasma BNP level.

Inclusion Criteria:

1. aortic valve disease requiring surgical disease patients without symptoms with severe aortic stenosis - indexed area of the opening less than 0.5 cm2 / m2, average gradient more than 40 mm RT. Art;

   o patients who require coronary artery bypass grafting with moderate aortic stenosis - indexed area of the hole 0.5 - 1 cm2 / m2, the average gradient is more than 20 mm RT. Art., Regardless of symptoms;patients with symptoms of aortic stenosis, regardless of the severity of stenosis)

2. mitral valve disease requiring surgical disease

Exclusion Criteria:

1. the need for prosthetics of two or more valves
2. patients with a decrease in LVEF of less than 45%;
3. the presence of a competing disease or concomitant pathology that significantly affects the prognosis of quality of life or the likelihood of death
4. high pulmonary hypertension (SDJ above 60 mm Hg. Art.);
5. the diameter of the ascending aorta is more than 45 mm;
6. unwillingness of the patient to participate in the study.

Deidentified individual participant data (text, tables, figures, and appendices), underlying the results of the trial, will be shared with researchers to achieve the aims in the approved proposal.

Proposals may be submitted up to 36 months following publication of the results of the trial. After 36 months, the data will be available in the Center's data ware house but without investigator support other than deposited metadata.

Information regarding submitting proposals and accessing data may be requested from the principal investigator by e-mail.