Chronic Kidney Disease and the Pathophysiology of Valvular Heart Disease

摘要

Valvular heart calcification is common in patients with chronic kidney disease (CKD), especially in those receiving hemodialysis therapy, and it is associated with poor prognosis. Furthermore, progression of valvular heart disease (VHD) and structural valve deterioration of bioprosthetic valves are faster in these patients. Mechanisms involved in the pathophysiology of VHD are similar between patients with and without impaired kidney function, but CKD is associated with a bone metabolism dysregulation, which might lead to a procalcifying phenotype within vessels and heart valves. CKD is also associated with left ventricular remodelling and dysfunction, which might contribute to increase the risk of heart failure and death in patients with VHD. Even if promising pharmacotherapeutic avenues are in development, no medical treatment can prevent or reduce the valvular calcific process. Patients with advanced CKD should undergo transthoracic echocardiography for detection of VHD, and if present, follow-up should be more frequent than what is recommended in the guidelines. Transcatheter valve replacement might be preferred over surgical replacement in patients with CKD and severe aortic valve stenosis.