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Differential Effect of Early Intervention for Moderate Aortic Stenosis by Extravalvular Damage

Jaehyun Lim1, Soongu Kwak1, Kyu Kim2

  • 1Division of Cardiology and Cardiovascular Center, Seoul National University Hospital and Seoul National University College of Medicine, Seoul, Republic of Korea.

Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography
|May 30, 2026
PubMed

Insights

Early intervention may improve survival for patients with moderate aortic stenosis (AS) and advanced cardiac damage. Conservative treatment is less effective for those with high-stage extra-valvular damage.

Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Clinical Trials

Background:

  • Moderate aortic stenosis (AS) management remains uncertain, particularly regarding early intervention benefits.
  • Extra-valvular cardiac damage may influence treatment outcomes in moderate AS patients.

Purpose of the Study:

  • To compare early intervention versus conservative treatment in moderate AS patients.
  • To investigate the impact of extra-valvular cardiac damage stage on moderate AS outcomes.

Main Methods:

  • Multicenter retrospective cohort study of 2,490 moderate AS patients (2008-2020).
  • Patients categorized into low-stage (0-2) and high-stage (3-4) extra-valvular cardiac damage.
  • Primary outcome: all-cause mortality; early intervention defined as within one year of index echocardiography.

Main Results:

  • High-stage extra-valvular damage was linked to significantly higher mortality risk (aHR 1.33).
  • Early intervention improved survival in high-stage moderate AS patients (aHR 0.45, P=.006).
  • No significant survival benefit from early intervention was observed in low-stage moderate AS patients (aHR 0.76, P=.137).

Conclusions:

  • Early intervention may offer survival benefits for moderate AS patients with advanced extra-valvular cardiac damage.
  • Stratifying moderate AS patients by cardiac damage stage is crucial for treatment decisions.
Abstract

Keywords:
Aortic valveConservative treatmentEarly interventionExtra-valvular cardiac damageModerate aortic stenosis

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