«Научно-исследовательский институт кардиологии» Томского национального исследовательского медицинского центра Российской академии наук (НИИ кардиологии Томского НИМЦ), Томск, Россия РЕЗЮМЕ Цель исследования-проанализировать результаты применения клапаносодержащего кондуита (КСК) с биологическим протезом аортального клапана (АК) и системой «easy change». Материал и методы. В марте 2019 г. в отделении сердечно-сосудистой хирургии НИИ кардиологии Томского НИМЦ СО РАН проведены три операции протезирования корня аорты КСК с биологическим протезом и системой «easy change» с реимплантацией коронарных артерий по методике Bentall-DeBono. Возраст пациентов составил 65, 69 и 70 лет соответственно. Все больные были мужского пола с приобретенным пороком АК и аневризмой корня аорты. До операции и перед выпиской из стационара (через 14 дней после операции) было проведено трансторакальное эхокардиографическое (ЭхоКГ) исследование функции АК и левого желудочка. Результаты. По данным ЭхоКГ, у пациента 65 лет отмечен стеноз АК с пиковым и средним градиентами давления 95 и 63 мм рт.ст. соответственно, эффективной площадью отверстия АК 1,5 см 2 , аневризма корня аорты до 60 мм. У пациента 70 лет-врожденная дисплазия соединительной ткани, недостаточность АК 3-й степени и аневризма восходящей аорты до 56 мм. У пациента 69 лет-инфекционный эндокардит, недостаточность АК 3-й степени, аневризма корня аорты. Через 14 сут после операции пиковый градиент давления на протезе АК 25 мм составил 23 мм рт.ст. (пациент 65 лет), 39 мм рт.ст. на протезе 23 мм (пациент 69 лет) и 32 мм рт.ст. на протезе 27 мм (пациент 70 лет). Средний градиент давления составил 12, 21 и 17 мм рт.ст. соответственно. Выводы. Первый опыт применения КСК с биологическим протезом и системой «easy change» показал удобство имплантации и удовлетворительные гемодинамические результаты коррекции при возможном упрощении техники замены клапана в случае повторного вмешательства. Ключевые слова: операция Bentall-DeBono, клапаносодержащий кондуит, биологический протез аортального клапана, порок аортального клапана, аневризма корня аорты.
Aim. To assess the severity of heart failure (HF) 1 year after aortic valve replacement with a novel bioprosthetic valve with the “easy change” system.Material and methods. The study included 59 patients (24 men and 35 women) diagnosed with degenerative aortic valve disease without concomitant cardiac pathology. The mean age of the patients was 69,6±4,3 years. An assessment of NYHA HF class using six-minute walk test was carried out. The venous plasma level of N-terminal pro-brain natriuretric peptide (NT-proBNP) before and after surgery was also used to determine the severity of HF. In 31 patients (52,5%), NYHA class III HF was determined before surgery.Results. Comparative analysis of HF classes revealed a significant difference. Thus, after implantation of MedEng-BIO prosthetic aortic valve, the distance of the six-minute walk test increased by an average of 125 m (p=0,001). NT-proBNP level decreased from 162,2 pg/ml to 63,7 pg/ml (p=0,003).Conclusion. One-year follow-up of patients after implantation of a novel bioprosthetic aortic valve showed an objective decrease in the severity of HF according to six-minute walk test and NT-proBNP level in venous blood plasma.
Aim. To compare the outcomes of aortic valve replacement using the xenogenic aortic prosthesis Hancock II and the novel Russian xenogenic pericardial prosthesis MEDINGE-BIO.Material and methods. The study included patients operated on for aortic stenosis in the cardiac surgery department № 1 of the Cardiology Research Institute (Tomsk National Research Medical Center). All patients were divided into two groups. The first group included 54 patients with Hancock II prostheses, the second — 91 patients with MEDINGE-BIO prostheses. Hemodynamic characteristics of heart valves were assessed by echocardiography before surgery and before discharge (on average 10 days after surgery).Results. When comparing hemodynamic parameters before and after surgery, significant differences between the groups were not obtained. The average pressure gradient after surgery using Hancock II and MEDINGE-BIO prosthesis was 21,6±7,9 and 17,9±5,6 mm Hg, respectively (p=0,05).Conclusion. The comparative analysis showed that the novel biological prosthesis MEDINGE-BIO has comparable hemodynamic characteristics with the well-known aortic prosthesis Hancock II.
Aim To evaluate quality of life (QoL), general survival, and development of complications in patents one year after surgical aortic valve (AV) replacement with a MedInzh-BIO xenopericardial carcass prosthesis.Material and methods Degenerative AV disease is one of the most common cardiovascular diseases that gives place only to ischemic heart disease. Surgical correction of the AV defect should be aimed not only at hemodynamic outcomes but also at improvement of QoL. This study included 91 patients (48 women and 43 men), who were implanted with a MedInzh-BIO biological xenopericardial prosthesis in aortic position from January 2017 through March 2020. Mean age of patients was 69.96±4.4 years. QoL was evaluated with a standard SF-36 questionnaire. Also, survival and complications were analyzed one year after surgery.Results Data analysis before and one year after surgery showed a significant improvement of QoL. Postoperative one-year survival was 95.4 %, and major valve-associated complications were absent in 94.5% of cases. During one year, four patients died after 1, 6, 8, and 10 months of follow-up, respectively.Conclusion The improvement of QoL following the AV replacement with a novel xenopericardial carcass prosthesis with the “easy change” system indicates the clinical and functional effectiveness of the used method. The results of the study demonstrated improvements of both the physical health component and the subjective emotional assessment. Postoperative one-year survival was 95.4 %, and major valve-associated complications were absent in 94.5% of cases.
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