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Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
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Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
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Calcific Aortic Stenosis: A Review.

Catherine M Otto1, David E Newby2, Graham S Hillis3

  • 1Division of Cardiology, University of Washington School of Medicine, Seattle.

JAMA
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PubMed
Summary
This summary is machine-generated.

Calcific aortic stenosis (AS) is a progressive condition affecting older adults. Treatment with surgical aortic valve replacement or transcatheter aortic valve implantation significantly reduces mortality in symptomatic severe AS patients.

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Area of Science:

  • Cardiology
  • Geriatrics
  • Valvular Heart Disease

Background:

  • Calcific aortic stenosis (AS) is a common condition in adults over 65, characterized by aortic valve calcification and fibrosis.
  • It affects 1-2% of adults over 65 and 12% over 75 in the US, leading to over 100,000 deaths annually worldwide.
  • AS involves lipid infiltration, inflammation, fibrosis, and calcification of aortic valve leaflets, restricting blood flow.

Purpose of the Study:

  • To review the diagnosis, management, and treatment options for calcific aortic stenosis.
  • To highlight the importance of timely intervention for symptomatic severe AS.
  • To discuss the comparative outcomes and guidelines for surgical aortic valve replacement (SAVR) and transcatheter aortic valve implantation (TAVI).

Main Methods:

  • Echocardiography is used to detect AS and assess its severity.
  • Management includes patient education, regular clinical and echocardiographic surveillance, and risk factor modification (hypertension, hyperlipidemia, smoking).
  • Treatment for symptomatic severe AS involves SAVR or TAVI.

Main Results:

  • Severe AS is defined by aortic velocity ≥4 m/s, mean gradient ≥40 mm Hg, or valve area ≤1.0 cm².
  • Without intervention, symptomatic severe AS carries a 1-year mortality rate of up to 50%.
  • SAVR and TAVI restore average life expectancy, with comparable 10-year all-cause mortality in older, low-risk patients (TAVI: 62.7%, SAVR: 64.0%). TAVI offers benefits like shorter hospitalization and faster recovery.

Conclusions:

  • Calcific AS is a progressive condition diagnosed by echocardiography, with severe symptomatic cases having high mortality.
  • SAVR or TAVI significantly reduces mortality in symptomatic severe AS patients, normalizing life expectancy.
  • Treatment decisions should be guided by evidence-based guidelines, shared decision-making, and a multidisciplinary heart valve team.