Predictors of Mid-Term AVNeo Insufficiency

ABSTRACT Introduction: Aortic stenosis (AS) is the most common valvular heart disease and the most common indication for aortic valve replacement in adults. Aortic valve neocuspidization (AVNeo) with fixed autologous pericardium, also known as the Ozaki procedure, is a possible alternative treatment of AS. Autopericardial valves save the dynamics and physiological anatomy of the aortic root, however, the service life of autopericardial leaflets is limited. There is no data about factors that may influence the development of AVNeo insufficiency. Here, we assessed the effect of autopericardial leaflet symmetry on the development of aortic insufficiency after Ozaki procedure. Methods: This study included 381 patients with AS who underwent Ozaki procedure. Patients were divided into group 1 (171 patients with symmetric aortic root) and group 2 (210 patients with asymmetric aortic root). Results: The maximum observation period was up to 65 months. Sixteen cases of aortic insufficiency were detected in group 1, and 33 cases were detected in group 2. Based on the results of Cox regression, the predictors of aortic insufficiency in the late postoperative period are age and asymmetry of neocusps. According to results of Kaplan-Meier analysis, insufficiency of AVNeo in the maximum follow-up period after surgical correction of AS for group 1 patients was significantly lower than for group 2 patients (P=0.006). Conclusion: Asymmetric neocusps increase the risk of aortic insufficiency in the mid-term period after Ozaki procedure. And the older the patients at the time of surgery, the less likely they develop AVNeo insufficiency.

The Russian conduit - combining bentall and ozaki procedures for concomitant ascending aorta replacement and aortic valve neocuspidization

Abstract In aortic valve disease cases, prosthetic valves have been used for valve replacement, however, these prostheses have inherent problems, and their quality in some countries is lower comparing to new-generation models, causing shorter durability. Aortic valve neocuspidization (AVNeo) has emerged as an option, which can be applied to a wide spectrum of these diseases. Despite the promising results, this procedure is not widely spread among cardiac surgeons yet. We developed a surgical technique combining Bentall and Ozaki procedures to treat patients with concomitant ascending aorta replacement and AVNeo and we describe it in this paper.

Estenosis aórtica severa con válvula tetracúspide: Un trébol de cuatro hojas

La válvula aórtica cuadricúspide es una anomalía congénita poco frecuente, que generalmente se presenta como una malformación aislada causando regurgitación aórtica más frecuentemente en la quinta o en la sexta década de la vida. Los primeros casos notificados se encontraron en autopsias o se hicieron evidentes en hallazgos quirúrgicos. Actualmente, la ecocardiografía y otros métodos diagnósticos por imágenes permiten un diagnóstico más temprano, incluso en pacientes asintomáticos. Se presenta el caso de un hombre de 53 años con válvula aórtica cuadricúspide diagnosticada mediante ecocardiografía y complicado con el desarrollo de estenosis valvular severa. Se incluye una breve discusión de la enfermedad.

The quadricuspid aortic valve is a rare congenital anomaly, which usually presents as an isolated malformation causing aortic regurgitation more frequently in the fifth or sixth decade of life. The first reported cases were found at autopsies or became evident in surgical findings. Currently, echocardiography and other diagnostic imaging methods allow earlier diagnosis, even in asymptomatic patients. The case of a 53-year-old man with quadricuspid aortic valve diagnosed by echocardiography and complicated with the development of severe valve stenosis is presented. A brief discussion of the disease is included.

A valva aórtica quadricúspide é uma anomalia congênita rara, que geralmente se apresenta como uma malformação isolada, causando regurgitação aórtica com maior frequência na quinta ou sexta década de vida. Os primeiros casos relatados foram encontrados em autópsias ou evidenciados em achados cirúrgicos. Atualmente, a ecocardiografia e outros métodos de diagnóstico por imagem permitem o diagnóstico precoce, mesmo em pacientes assintomáticos. O caso de um homem de 53 anos com valva aórtica quadricúspide diagnosticada por ecocardiograma e complicado com o desenvolvimento de estenose valvar grave é apresentado. Uma breve discussão sobre a doença está incluída.