What survival rates are reported for untreated severe aortic stenosis at two and five years?

✓ Accepted answer

For patients with symptomatic severe aortic stenosis who decline or defer intervention, reported mortality rates indicate that approximately 50 percent of patients will not survive two years without treatment.

While specific five-year survival data for untreated severe cases is often projected as extremely low—frequently below 10 percent—clinical guidelines emphasize that the presence of symptoms is the critical turning point for prognosis. Once symptoms such as syncope, heart failure, or angina appear, the natural history of the disease shifts dramatically. Key points to consider when discussing urgency with your family include:

• Two-Year Mortality Benchmark: The 50 percent two-year survival rate is a standard clinical benchmark used to illustrate that without valve replacement, the condition becomes a terminal diagnosis rather than a manageable chronic illness.
• Importance of Symptom Status: Survival statistics are starkly different for asymptomatic patients; however, the onset of symptoms typically reduces life expectancy significantly, making delay dangerous.
• TAVR Safety Profile: In 2026, transcatheter aortic valve replacement continues to demonstrate low procedural risk, often preferred for patients aged 75 and older or those deemed high-risk for open surgery.
• Organ Function Impact: Untreated stenosis places excessive strain on the left ventricle, leading to irreversible heart failure and reduced quality of life in the months preceding death.
• Guideline Recommendations: Major cardiology societies recommend valve intervention as soon as symptoms manifest, as medical management alone does not improve survival.

admin · 2026-10-11 12:59:46