Aortic stenosis (AS) is the most frequent heart valve disease requiring surgery and its incidence is further increasing.1 The natural history of severe AS is characterized by an asymptomatic phase with increasing left ventricular outflow tract obstruction and left ventricular pressure overload. Asymptomatic patients with severe AS can be managed according to a ‘watchful waiting strategy’, although elective surgery can be considered in selected patients after risk stratification.
