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The aortic valve is a complex regulatory system crucial for the heart's optimal function, and it comprises several components, including the annulus, cusps, sinuses of Valsalva, and the sinotubular junction. These components form a biomechanical unit that efficiently manages the forces exerted during the cardiac cycle. Aortic valve repair is a surgical procedure designed to preserve the native valve and restore its function in patients with aortic valve insufficiency or disease. Aortic valve pathologies can severely affect the body due to perfusion deficits, with aortic valve insufficiency often resulting from shear forces causing stretching, dilation, and valve rupture. Understanding these intricacies is essential for clinicians to perform successful aortic valve repairs. Aortic valve repair can improve outcomes and reduce long-term complications compared to valve replacement by addressing specific valve pathologies and associated structural abnormalities. Successful execution of this procedure requires careful patient selection, meticulous surgical techniques, and close postoperative monitoring to ensure optimal results and patient satisfaction. This activity reviews the surgical anatomy of the aortic valve, indications and contraindications for repair, various repair techniques, perioperative management strategies, and postoperative care protocols. This activity also provides clinicians with comprehensive knowledge and skills in evaluating patients for aortic valve repair, understanding surgical procedures, managing intraoperative and postoperative complications, and optimizing patient outcomes. Additionally, clinicians acquire valuable insights, evidence-based practices, and practical tools to enhance their clinical practice and provide high-quality care to patients with aortic valve diseases. Objectives: Identify suitable candidates for aortic valve repair based on a comprehensive evaluation of valvular anatomy, pathology, and patient-specific factors. Screen patients effectively using echocardiography and other diagnostic tools to determine the severity of aortic valve dysfunction. Assess the suitability of patients for aortic valve repair versus replacement, considering factors such as age, comorbidities, and valve morphology.

Identify suitable candidates for aortic valve repair based on a comprehensive evaluation of valvular anatomy, pathology, and patient-specific factors. Screen patients effectively using echocardiography and other diagnostic tools to determine the severity of aortic valve dysfunction. Assess the suitability of patients for aortic valve repair versus replacement, considering factors such as age, comorbidities, and valve morphology. Collaborate with a multidisciplinary team, including cardiologists, cardiac surgeons, anesthesiologists, and nursing staff, to provide comprehensive care for patients undergoing aortic valve repair. Access free multiple choice questions on this topic.

Heart valves undergo approximately 100,000 cycles daily, culminating in around 3 billion cycles over a 75-year life span, facing numerous stresses. Traditionally, the aortic valve was viewed as a "static" structure with the primary role of ensuring unidirectional blood flow from the left ventricle (LV) and assisting coronary perfusion. However, recent insights have transformed this view, recognizing the aortic valve as a functionally intricate regulatory system essential for the heart's optimal mechanobiological coupling (see Image. The Aortic Valve). The aortic valve is a complex regulatory system crucial for the heart's optimal function, and it comprises several components, including the annulus, cusps, sinuses of Valsalva, and the sinotubular junction (STJ). These components form a biomechanical unit that efficiently manages the forces exerted during the cardiac cycle. The crown-shaped geometry of the semilunar valves enhances their efficiency and responsiveness during the cardiac cycle, allowing them to effectively manage the varying forces exerted upon them (see Video. Aortic Valve Movement).[1] Aortic valve pathologies can severely affect the body due to perfusion deficits. Aortic valve insufficiency is primarily caused due to the underlying shear forces that lead to stretching, dilation, and valve rupture.[2] Moreover, conditions of the aortic root, including coarctation, dissection, and aneurysm, can exacerbate aortic valve pathology by increasing the shear force of blood at the aortic valve, disrupting the laminar flow.[3] Managing aortic valve pathologies often involves either repair or replacement. Aortic valve repair is a surgical procedure designed to preserve the native valve and restore its function in patients with aortic valve insufficiency or disease. Aortic valve replacement with a biological or prosthetic valve has long been the cornerstone of treatment for these conditions. However, there is ongoing debate regarding the relative merits of aortic valve repair versus replacement in specific patient subsets. While aortic valve repair may offer advantages in certain scenarios, its efficacy and suitability must be carefully weighed against the established benefits of valve replacement (see Image. Recommendations for Aortic Valve Replacement).

Managing aortic valve pathologies often involves either repair or replacement. Aortic valve repair is a surgical procedure designed to preserve the native valve and restore its function in patients with aortic valve insufficiency or disease. Aortic valve replacement with a biological or prosthetic valve has long been the cornerstone of treatment for these conditions. However, there is ongoing debate regarding the relative merits of aortic valve repair versus replacement in specific patient subsets. While aortic valve repair may offer advantages in certain scenarios, its efficacy and suitability must be carefully weighed against the established benefits of valve replacement (see Image. Recommendations for Aortic Valve Replacement). Over the last decade, aortic valve repair and preservation have gained significant importance in treating aortic root disease, both with and without insufficiencies. These procedures have been successfully performed worldwide, although they account for less than 2% of all valve procedures due to the high level of expertise required.[4] The low prevalence of aortic valve repair compared to mitral valve repair is partly because calcific aortic stenosis is the most common valvular pathology, making aortic valve replacement a more frequent intervention. Aortic valve replacement, while seemingly simpler than repair, carries long-term complications such as structural deterioration, restenosis, infection, and bleeding due to the need for anticoagulation.[5][6] These complications have led to a growing interest in aortic valve preservation procedures, which maintain the normal anatomy and physiology of the aortic valve functional unit and potentially avoid the complications associated with replacement. Consequently, aortic valve preservation is becoming a reasonable alternative to replacement, aiming to prevent long-term issues and improve patient outcomes.

Aortic valve repair demands a substantial case volume, a proficient interdisciplinary team for thorough evaluation, and expertise in patient selection. Despite these measures, complications stemming from insufficient repair of the original valvular defect may endure.[29] They are listed as follows: Early Complications Early complications typically result from technical errors. Low coaptation: Inadequate valvular coaptation observed during intraoperative or postoperative TEE should prompt the surgeon to continue the procedure and further plicate the cusps to prevent aortic insufficiency due to poor coaptation. Residual prolapse: Any remaining prolapse following completion of valve repair surgery, whether due to the surgical process or primary prolapse unrelated to surgery, should be addressed before concluding the procedure. Cusp perforation and missed fenestration: Iatrogenic perforation occurring during manipulation of the valvular cusps should be promptly repaired. If the valve's fenestration is significant, it should also be addressed before completing the procedure. Patch dehiscence: In some cases, when a pericardial patch is utilized to reimplant the aortic valve and aortic root, the patch may dehisce during the early recovery phase, necessitating reoperation and patch fixation. Rupture of the anterior leaflet of the mitral valve: Due to the proximity of the anterior leaflet of the mitral valve's base, an inadvertent perforation may lead to mitral regurgitation. This should be addressed promptly to prevent hemodynamic compromise related to mitral insufficiency. Hematomas: Localized bleeding at the repair site may lead to small hematomas that usually reabsorb within a few days. Complications related to subcommissural annuloplasties: Subcommissural annuloplasties can disrupt the aortic valve apparatus at the subvalvular level, causing fistula formation and pseudoaneurysms. These are severe complications that require fixation either during the index procedure or may require reoperation. Delayed Complications Delayed complications manifest months to years after the valve replacement.

Complications related to subcommissural annuloplasties: Subcommissural annuloplasties can disrupt the aortic valve apparatus at the subvalvular level, causing fistula formation and pseudoaneurysms. These are severe complications that require fixation either during the index procedure or may require reoperation. Delayed Complications Delayed complications manifest months to years after the valve replacement. Late-onset persistent aortic insufficiency: Despite a successful procedure, some patients may develop a small prolapse or mild malcoaptation of the valve, which can progress to become hemodynamically significant over the years. Similarly, gradual aortic root dilation can lead to progressive aortic insufficiency over months or years. Endocarditis: Reports of endocarditis involving the repaired valve are rare in the literature. Bleeding: Although rare, bleeding may be observed late after surgery in patients who have undergone aortic valve repair. The underlying mechanism is not well understood. Thromboembolism: Late-onset thromboembolic events are also infrequently reported in these patients. Progressive valve fibrosis and calcification: While attempts to repair type 3 aortic insufficiency may be initially successful, they can eventually lead to further fibrosis and calcification of the valve.[30] A recent meta-analysis revealed that the outcomes of valve-sparing root replacement are comparable between patients with a bicuspid aortic valve and those with a tricuspid aortic valve. Although there is a higher likelihood of reinterventions among patients with a bicuspid aortic valve after valve-sparing root replacement, this procedure remains a dependable and effective treatment for aortic root dilation, irrespective of aortic valve insufficiency. While patients with a tricuspid aortic valve experience a slightly lower long-term reintervention rate over 10 years, the disparity is not statistically significant, indicating that patients with a bicuspid aortic valve may face a greater clinical risk for reintervention.[31]

In the context of aortic valve repair, a multidisciplinary team approach is essential to ensure comprehensive patient-centered care and optimize outcomes. Physicians, advanced practitioners, nurses, pharmacists, and other health professionals play crucial roles throughout the patient's journey. During the preoperative phase, collaborative discussions and planning sessions involving all healthcare members help ensure thorough evaluation and preparation of the patient. Advanced practitioners and physicians assess the patient's medical history, perform physical examinations, and determine the appropriateness of aortic valve repair. Nurses provide support and education to patients and their families, helping to alleviate anxiety and ensure compliance with preoperative instructions. Pharmacists play a vital role in medication reconciliation, ensuring patients receive appropriate preoperative pharmacotherapy and optimizing perioperative medication management. In the postoperative period, effective interprofessional communication and care coordination are paramount. Nurses closely monitor patients for signs of complications, including pain, bleeding, respiratory distress, and thromboembolic events, while pharmacists collaborate with healthcare team members to manage pain and optimize medication regimens. Advanced practitioners and physicians provide ongoing assessment and management of the patient's condition, promptly addressing any concerns or complications. This collaborative approach enhances patient safety, reduces the risk of adverse events, and facilitates optimal recovery and long-term outcomes for patients undergoing aortic valve repair. Through meticulous planning, open communication, and coordinated efforts, the multidisciplinary team strives to achieve the best possible outcomes and improve the overall quality of care for patients with aortic insufficiency.[32]