Investigation of increased cardiovascular resistance induced by endograft implantation

This study investigates the long-term cardiovascular effects of thoracic endovascular aortic repair (TEVAR), focusing on the mechanisms linking increased cardiac workload to left ventricular hypertrophy in post-procedure patients. Clinical data comparing stroke work in the pre-TEVAR and post-TEVAR conditions were analyzed alongside the cardiovascular modeling to explore hemodynamic changes. The results revealed that endograft implantation significantly disrupts vascular compliance, causing temporal misalignment between the blood flow velocity and the pressure response. Consequently, the heart must expend additional energy. A novel metric, the “propelling work ratio ,” was introduced to quantify this energy efficiency, demonstrating a marked reduction from 89.7% pre-TEVAR to 57.6% post-TEVAR. This research enhances the understanding of TEVAR-induced cardiac remodeling, providing critical insights and tools for assessing cardiovascular health post-intervention.