Fitness-Tracker Assisted Frailty-Assessment Before Transcatheter Aortic Valve Implantation: Proof-of-Concept Study

Markus Mach   ^{1, 2} , MD ;   Victoria Watzal   ² ;   Waseem Hasan   ³ , BSc ;   Martin Andreas   ¹ , MD, MBA, PhD ;   Bernhard Winkler   ² , MD ;   Gabriel Weiss   ² , MD ;   Andreas Strouhal   ⁴ , MD ;   Christopher Adlbrecht   ⁴ , MD, MBA, FHFA ;   Georg Delle Karth   ⁴ , MD ;   Martin Grabenwöger   ^{2, 5} , MD

¹ Division of Cardiac Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria

² Department of Cardio-Vascular Surgery, Hospital Hietzing and Karl Landsteiner Institute for Cardio-Vascular Research, Vienna, Austria

³ Faculty of Medicine, Imperial College London, London, United Kingdom

⁴ Department of Cardiology, Vienna North Hospital - Clinic Floridsdorf and Karl Landsteiner Institute for Cardiovascular and Critical Care Research, Vienna, Austria

⁵ Medical Faculty, Sigmund Freud University, Vienna, Austria