Chronic kidney disease (CKD) and valvular heart disease (VHD) are increasingly recognized as interconnected conditions that amplify each other’s progression and worsen patient outcomes. In a new review appearing in *Physiological Reports*, researchers have outlined current evidence on how the 2 diseases share overlapping metabolic, inflammatory, and fibrotic pathways that drive their parallel progression.1
Managing metabolic disturbances early in CKD appears to be the most effective approach for reducing the risk of valvular complications. | Image credit: Katie Chizhevskaya – stock.adobe.com
The Intertwined Challenges of Chronic Kidney Disease and Valvular Heart Disease
Two diseases, chronic kidney disease (CKD) and valvular heart disease (VHD), pose critically important diagnostic and management challenges. Patients often present late, and conventional imaging techniques may underestimate disease severity due to the atypical hemodynamics of uremic cardiomyopathy. Moreover, patients with CKD are less likely to undergo valve replacement surgery because of higher perioperative risks, frailty, and poor postoperative recovery. yet delaying intervention can lead to rapid deterioration. The review emphasizes that decision-making in this setting must balance surgical risks with the high mortality associated with untreated valvular disease.
Throughout the review, published in physiological Reports, the researchers outlined how these two disorders create a cycle of metabolic and hemodynamic stress where kidney dysfunction accelerates cardiac valve degeneration, and cardiac dysfunction worsens renal impairment.
The researchers call for a more integrated model of care, recognizing CKD and VHD as manifestations of a single systemic process rather than isolated diseases.They explain how the coexistence of CKD and VHD creates a non-coincidental interdependence rooted in shared molecular pathways. in CKD, the dysregulation of mineral metabolism, notably elevations in phosphate, fibroblast growth factor 23, and parathyroid hormone, promotes calcium deposition in vascular and valvular tissue. Oxidative stress and endothelial dysfunction further contribute to tissue remodeling and calcific degeneration.
The group explained that chronic inflammation, fueled by uremic toxins and cytokine release, accelerates fibroblast activation and extracellular matrix deposition in both kidneys and cardiac valves. Together,these processes establish a chronic inflammatory-fibrotic state that blurs the boundaries between the two conditions.
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