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Related Concept Videos

Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

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...
Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...
Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
Mitral Stenosis III: Medical Management01:26

Mitral Stenosis III: Medical Management

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...
Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

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...
Aortic Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

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...

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Related Experiment Video

Updated: Jun 12, 2026

Upper-extremity Approach for Secondary Access in Transfemoral Transcatheter Aortic Valve Implantation
06:04

Upper-extremity Approach for Secondary Access in Transfemoral Transcatheter Aortic Valve Implantation

Published on: August 8, 2025

Acute left main obstructions following TAVI.

Eugenio Stabile1, Giovanni Sorropago, Angelo Cioppa

  • 1Invasive Cardiology Laboratory, Clinica Montevergine, Mercogliano, Italy.

Eurointervention : Journal of Europcr in Collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology
|June 15, 2010
PubMed
Summary

Transcatheter aortic valve implantation (TAVI) can cause coronary obstruction. Awareness and aortography during balloon valvuloplasty can help identify and manage this serious complication in high-risk patients.

Related Experiment Videos

Last Updated: Jun 12, 2026

Upper-extremity Approach for Secondary Access in Transfemoral Transcatheter Aortic Valve Implantation
06:04

Upper-extremity Approach for Secondary Access in Transfemoral Transcatheter Aortic Valve Implantation

Published on: August 8, 2025

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Cardiac Surgery

Background:

  • Transcatheter aortic valve implantation (TAVI) is a safe and effective treatment for severe symptomatic aortic valvular stenosis (AVS) in high-risk patients.
  • Coronary ostial obstruction is a potential complication following TAVI.

Observation:

  • Five cases of left main (LM) coronary obstruction post-TAVI with balloon-expandable valves were reported.
  • Four cases required emergency percutaneous coronary intervention (PCI) for resolution.
  • One case experienced transient obstruction during balloon valvuloplasty, not requiring intervention.

Findings:

  • Coronary ostial obstruction is a recognized complication of TAVI.
  • Early identification via aortography during balloon valvuloplasty may help assess risk.
  • Prompt PCI can effectively manage acute LM obstruction post-TAVI.

Implications:

  • TAVI operators must be vigilant for coronary ostial obstruction.
  • Pre-procedural planning and intra-procedural monitoring are crucial.
  • Increased awareness may improve patient outcomes and procedural safety.