Patient-specific computer simulation of transcatheter aortic valve replacement in patients with previous mechanical mitral prosthesis: A case series.

Transcatheter aortic valve replacement performed in patients with previously implanted mechanical mitral prosthesis represents a high risk procedure with several potential complications. We report a systematic use of a prediction model based on artificial intelligence to plan the interventional strategy in this challenging scenario.

Combined transcatheter aortic valve and tricuspid valve-in-valve implantation in a patient with a mitral mechanical prosthesis.

Despite progressively uncommon in Western countries, rheumatic heart disease still portrays a significant global burden. In elderly or high-surgical risk patients, plurivalvular disease may require a complex percutaneous approach. Transcatheter aortic valve implantation (TAVI) in patients with previous monoleaflet mitral prosthesis is challenging due to interference between the aortic valve and the rigid mitral mechanical prosthesis "ring." Prior cases report the use of CoreValve or Edwards Sapien aortic valves in patients with adequate mitro-aortic distance. Performing a second major procedure, such as tricuspid valve-in-valve (TVIV), sequentially during a single percutaneous intervention, increases treatment complexity. An 83-year-old woman with rheumatic heart disease, with previous implantation of a Bjork-Shiley monoleaflet mitral prosthesis, and Carpentier-Edwards 29 tricuspid bioprosthesis presented with decompensated heart failure due to severe aortic stenosis and tricuspid bioprosthesis stenosis. After HeartTeam discussion, the patient was deemed as inoperable due to a prohibitive surgical risk. As an alternative, a TAVI (Navitor FlexNav) and a transcatheter TVIV replacement (Edwards Sapiens 3 Ultra) were discussed and proposed, with both techniques being performed sequentially in a single procedure. TAVI in a patient with a previous monoleaflet mitral mechanical prosthesis and TVIV may be a feasible approach in inoperable patients with plurivalvular disease.

Mitral valve replacement in young patients: review and current challenges.

Mitral valve repair is the ideal intervention for mitral valve disease with excellent long-term survival comparable to the age-matched general population. When the mitral valve is not repairable, mechanical prostheses may be associated with improved survival as compared with biological prostheses. Newer mechanical and biological valve prostheses have the potential to improve outcomes following mitral valve replacement in young patients. Patients presenting for mitral valve surgery after failed transcatheter mitral valve-in-valve have high rates of postoperative mortality and morbidity, exceeding those seen with reoperative mitral valve surgery, which poses issues in young patients who have a higher cumulative incidence of reintervention.

Patients presenting with mitral valve disease, the most common type of heart valve disease, have a survival advantage when they undergo mitral valve repair as opposed to replacement, and this is particularly true for young patients. When the mitral valve is not repairable, mechanical prostheses (prosthetic implants) may be associated with improved survival as compared with biological prostheses, and this difference is mostly observed until the age of 70 years. Newer techniques of treating mitral valve disease without requiring open heart surgery have not yet been shown to be superior or even equivalent to traditional open heart surgery in the general population. Patients presenting for mitral valve surgery after failure of these newer techniques have high rates of death, exceeding those seen with mitral valve reoperation, which has important implications for young patients with mitral valve disease.

A PREGNANT WOMAN WITH AN EXTRA CARDIAC CAVITY: AN ACQUIRED IATROGENIC COMPLICATION - A CASE REPORT AND LITERATURE REVIEW.

According to the modified World Health Organization (WHO) classification, mechanical valves pose a high maternal risk and complications for pregnant women with heart disease. Left atrial appendage aneurysm (LAAA) is a rare condition that can manifest clinically in several ways or remain silent for a long time and can be either congenital or acquired. We present the case of a pregnant woman who had a LAAA discovered several years after her last mitral valve replacement. LEARNING POINTS: Left atrial appendage aneurysm is a rare entity and, in most cases, is congenital due to poor myocardial contractility of dysplastic pectinate muscles.Clinical manifestations range from an asymptomatic course with an incidental finding on echocardiography up to serious sequelae such as cardioembolic manifestations.The treatment approach includes a conservative strategy using anticoagulation and a surgical strategy with aneurysmectomy.

Acute Bilateral Renal Infarction: An Unusual Complication After Mitral Valve Replacement Surgery.

Bilateral renal infarction is an uncommon clinical condition that is frequently misdiagnosed. Its various mechanisms mainly include thrombotic and embolic. We report the case of a 51-year-old Moroccan woman, who presented with acute bilateral renal infarction three days following mitral valve replacement surgery of probable embolic origin despite curative heparin. Her renal function did not improve, and the patient developed chronic renal failure. Diagnosing bilateral renal infarction is challenging, especially in the postoperative period of mechanical mitral valve replacement surgery. Curative heparin therapy does not totally protect (100%) against this serious complication. This case study aimed to raise awareness of this rare clinical condition after cardiac surgery.