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Related Concept Videos

Mitral Stenosis III: Medical Management01:26

Mitral Stenosis III: Medical Management

246
Mitral stenosis, a condition marked by the narrowing of the mitral valve, necessitates an integrated approach for effective management. This approach includes preventative measures, medical therapy, and surgical interventions to reduce symptoms and prevent complications.PreventionPrevention of mitral stenosis primarily focuses on reducing the incidence of bacterial infections, particularly streptococcal infections, which can lead to rheumatic fever and subsequent valvular damage. Timely...
246
Aortic Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

396
Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...
396
Mitral Regurgitation III: Medical Management01:25

Mitral Regurgitation III: Medical Management

279
Mitral regurgitation (MR) is characterized by retrograde blood circulation from the left ventricle into the left atrium due to inadequate mitral valve closure. The severity of the condition, symptoms, and underlying cause determine treatment strategies.Monitoring and Pharmacological TreatmentPatients with mild to moderate MR typically do not need immediate intervention but regular monitoring to assess progression and guide treatment. Patients with mild MR should have an echocardiogram every 3-5...
279
Urinary Tract Calculi III: Medical Management01:30

Urinary Tract Calculi III: Medical Management

194
The diagnosis of renal calculi involves several imaging techniques, including non-contrast CT scans and ultrasound. These methods help visualize kidney stones, assess their size and location, and detect possible obstructions. Additionally, Measuring urine pH is useful for diagnosing specific stone types, such as struvite (alkaline pH) and uric acid stones (acidic pH). Cystine stones are primarily linked to cystinuria, a genetic condition. A urinalysis helps detect blood in the urine (hematuria)...
194
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT01:25

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

389
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...
389
Urinary Tract Calculi VI: Surgical Management01:25

Urinary Tract Calculi VI: Surgical Management

379
Procedures for Kidney StonesMedical intervention is necessary when kidney stones or renal calculi are too large to pass spontaneously (typically greater than 5 millimeters) when stones are accompanied by symptomatic infection (such as fever or pyelonephritis), when they impair kidney function, or when they cause persistent symptoms like severe pain, nausea, or urinary retention. Additionally, patients with only one kidney or those who cannot be treated with medical management also require...
379

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Related Experiment Video

Updated: Jan 16, 2026

Improved Registration of 3D CT Angiography with X-ray Fluoroscopy for Image Fusion During Transcatheter Aortic Valve Implantation
06:59

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Aortic Valve Trans-Leaflet Lithotripsy for Targeted Periannular Calcium Modification Prior to TAVI.

Cheuk Bong Ho1, Hon Yeung Ko1, Michael Chi Shing Chiang1

  • 1Division of Cardiology, Department of Medicine, Queen Elizabeth Hospital, Hong Kong.

Structural Heart : the Journal of the Heart Team
|January 15, 2026
PubMed
Summary

A novel technique using leaflet traversal and intravascular lithotripsy modifies aortic valve calcium before TAVI, improving expansion and reducing risks. This method is recommended for severe eccentric calcification.

Area of Science:

  • Cardiovascular Medicine
  • Interventional Cardiology
  • Medical Devices

Background:

  • Aortic valve calcification poses challenges for transcatheter aortic valve implantation (TAVI).
Keywords:
ATLASCalcified bicuspid aortic valveLeaflet penetrationTAVITrans-leaflet lithotripsy

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  • Eccentric calcification can impede optimal valve deployment and increase complication risks.