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Related Concept Videos

Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

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Mitral regurgitation is characterized by the backward circulation of blood from the left ventricle to the left atrium during systole, a phase of the cardiac cycle when the heart contracts and pumps blood out of the chambers. This abnormal flow occurs primarily due to the dysfunction of the mitral valve or its supporting structures, which include the mitral leaflets, chordae tendineae, annulus, and papillary muscles.Etiology and Mechanisms:Primary Mitral Regurgitation: This type arises from...
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Mitral Regurgitation III: Medical Management01:25

Mitral Regurgitation III: Medical Management

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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...
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Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

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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 I: Introduction01:22

Mitral Stenosis I: Introduction

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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 Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

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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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Mitral Stenosis III: Medical Management01:26

Mitral Stenosis III: Medical Management

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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...
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New-Onset Left Bundle Branch Block After TAVI: An Updated Review.

Juan Ignacio Mayol1,2,3, Guillem Muntané-Carol2,3, Montserrat Gracida2,3

  • 1Centro Cardiológico Americano, Sanatorio Americano, 11300 Montevideo, Uruguay.

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Summary

Transcatheter aortic valve implantation (TAVI) is a common treatment for aortic stenosis. New-onset left bundle branch block (LBBB) after TAVI is the most frequent complication, impacting patient outcomes.

Keywords:
aortic stenosisconduction disturbancesnew-onset left bundle branch blocktranscatheter aortic valve implantation

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Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Cardiac Electrophysiology

Background:

  • Transcatheter aortic valve implantation (TAVI) is a primary treatment for severe symptomatic aortic valve stenosis.
  • Advancements in TAVI technology and patient selection have lowered complication rates.
  • New-onset left bundle branch block (LBBB) persists as the most common complication post-TAVI.

Purpose of the Study:

  • To review the current knowledge on new-onset left bundle branch block (LBBB) following TAVI.
  • To discuss the etiological factors, incidence, and clinical implications of post-TAVI LBBB.
  • To outline current management strategies for LBBB after TAVI.

Main Methods:

  • Literature review of studies on TAVI and new-onset LBBB.
  • Analysis of data on causes, incidence, and outcomes of LBBB post-TAVI.
  • Synthesis of current clinical guidelines and management approaches.

Main Results:

  • New-onset LBBB is the most frequent complication after TAVI.
  • Understanding of LBBB causes, incidence, and clinical outcomes is evolving.
  • Management strategies for post-TAVI LBBB are being refined.

Conclusions:

  • Despite TAVI advancements, new-onset LBBB remains a significant concern.
  • Further research is needed to fully elucidate the impact and management of post-TAVI LBBB.
  • Optimizing patient selection and procedural techniques may mitigate LBBB occurrence.