**2.1 Self-expandable valves**

Self-expandable valve family includes Evolut R, Evolut Pro, Evolut Pro+, \*Evolut FX (Medtronic, Minneapolis, MN, USA), Portico, Navitor (Abbott Vascular, Santa Clara, CA, USA), Acurate Neo (Boston Scientific, Marlborough MA, USA), Allegra (Biosensors, Singapore, Singapore, and New Valve Technology, Hechingen, Germany) and Biovalve (Biotronik, Buelach, Switzerland).
