Original research article: Does valvuloarterial impedance impact prognosis after surgery for severe aortic stenosis in the elderly?

摘要

BackgroundValvuloarterial impedance (Zva) was introduced as a prognostic measure in patients with aortic stenosis (AS). However, it is unclear whether Zva has a prognostic impact on survival after surgical aortic valve replacement (AVR) in patients with severe AS with preserved ejection fraction (EF).