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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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Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...
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IntroductionAortic regurgitation is characterized by the backward flow of blood from the aorta into the left ventricle during diastole and arises from the improper closure of the aortic valve. This condition results in left ventricular volume overload and can stem from both acute and chronic etiologies, each contributing uniquely to the disease's progression and symptomatology.Acute and Chronic CausesAcute aortic regurgitation often results from events that suddenly impair the integrity of the...
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Mitral stenosis is a heart condition in which the mitral valve, which allows blood to flow from the left atrium to the left ventricle, becomes narrowed or stenotic. This narrowing hinders blood flow and leads to clinical symptoms requiring specific medical evaluations and management strategies. The following overview outlines the clinical symptoms, assessments, diagnostic findings, prevention methods, and treatments for mitral stenosis.Clinical ManifestationsDyspnea (shortness of breath): This...
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An aortic aneurysm is a localized outpouching or dilation at a weak point in the artery wall. It may involve different parts of the aorta, such as the abdominal aorta, aortic arch, or thoracic aorta.Etiological factorsSeveral disorders are associated with aortic aneurysms.Congenital causes, such as primary connective tissue disorders like Marfan syndrome, impact the integrity and strength of connective tissues, notably affecting the aorta. Marfan syndrome is a genetic disorder that specifically...
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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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Related Experiment Video

Updated: Mar 21, 2026

Investigating Aortic Valve Calcification via Isolation and Culture of T Lymphocytes using Feeder Cells from Irradiated Buffy Coat
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Calcific aortic stenosis.

Brian R Lindman1, Marie-Annick Clavel2, Patrick Mathieu2

  • 1Cardiovascular Division, Washington University School of Medicine, St. Louis, Missouri, USA.

Nature Reviews. Disease Primers
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Summary

Calcific aortic stenosis (AS) is a common heart valve disease causing outflow obstruction. While aortic valve replacement (AVR) is the only effective treatment, new transcatheter AVR offers innovative options.

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Area of Science:

  • Cardiology
  • Cardiovascular Disease
  • Valvular Heart Disease

Background:

  • Calcific aortic stenosis (AS) is the most common heart valve disorder in developed nations.
  • It affects 0.4% of the general population and 1.7% of those over 65.
  • Risk factors include older age, congenital bicuspid valve, metabolic syndrome, and elevated lipoprotein(a).

Purpose of the Study:

  • To review the complex pathobiology of calcific AS.
  • To discuss current and emerging therapeutic targets.
  • To outline diagnostic and treatment strategies for AS.

Main Methods:

  • Review of current literature on calcific aortic stenosis.
  • Analysis of pathobiology, risk factors, and therapeutic targets.
  • Evaluation of diagnostic tools and treatment options, including transcatheter aortic valve replacement (TAVR).

Main Results:

  • Calcific AS involves complex pathobiology including inflammation, calcification, and cellular changes.
  • No current pharmacotherapy effectively slows AS progression.
  • Aortic valve replacement (AVR), especially transcatheter AVR (TAVR), is the primary treatment for severe AS.

Conclusions:

  • AS is a prevalent cardiovascular disease with significant morbidity.
  • Understanding the pathobiology is crucial for developing effective pharmacotherapies.
  • Transcatheter AVR has revolutionized treatment for high-risk patients and may expand to lower-risk populations.