The sources describe a clinical trial evaluating the effectiveness of early transcatheter aortic valve replacement (TAVR) in patients with asymptomatic severe aortic stenosis. The study compared early TAVR with routine clinical surveillance, finding that early TAVR significantly reduced the risk of death, stroke, or unplanned cardiovascular hospitalization. However, the study also highlights that a significant portion of patients in the surveillance group experienced a decline in quality of life before eventually needing valve replacement, emphasizing the potential for delayed interventions to impact patient well-being.