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Videos de Conceptos Relacionados

Mitral Valve Prolapse II: Assessment and Management01:22

Mitral Valve Prolapse II: Assessment and Management

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IntroductionA range of clinical features characterizes Mitral Valve Prolapse (MVP), but it is important to note that many individuals with MVP are asymptomatic and may remain so throughout their lives. For those who do exhibit symptoms, the following are the key clinical features:Palpitations: This is a common symptom where individuals feel an irregular or rapid heartbeat. Palpitations in MVP are often due to arrhythmias such as premature ventricular contractions or supraventricular...
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Mitral Valve Prolapse I: Introduction01:27

Mitral Valve Prolapse I: Introduction

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IntroductionThe mitral valve, one of the heart's four valves, regulates blood flow. These valves have flaps that open and close to direct blood properly through the heart and body. During each heartbeat, the flaps open for blood to pass through and seal shut to prevent backflow. Specifically, the mitral valve opens to allow blood flow from the heart's upper left chamber to the lower left chamber. It then closes securely as the lower left chamber contracts to pump blood to the body, preventing...
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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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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 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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Mitral Regurgitation II: Clinical Features and Diagnostic Tests01:23

Mitral Regurgitation II: Clinical Features and Diagnostic Tests

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Mitral regurgitation (MR) is a valvular heart disorder in which the mitral valve fails to close tightly, allowing blood to leak backward into the heart. Understanding the clinical manifestations, assessment, diagnostic findings, and medical management of MR is crucial to effectively managing affected patients.Clinical Manifestations of Mitral RegurgitationMitral regurgitation can be acute or chronic, each presenting differently and requiring different approaches:1. Acute Mitral...
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Video Experimental Relacionado

Updated: Sep 10, 2025

A Simplified Stepwise Approach to Echo Guidance during Percutaneous Mitral Valve Repair
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Arritmias ventriculares en pacientes sometidos a reparación mitral degenerativa: prevalencia e impacto en la

Betemariam Sharew1, Joanna Chikwe2, Aminah Sallam2

  • 1Department of Cardiac Surgery, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA; Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH.

The Journal of thoracic and cardiovascular surgery
|August 23, 2025
PubMed
Resumen

El prolapso aritmético de la válvula mitral no afecta la supervivencia después de la reparación quirúrgica, pero está relacionado con peores resultados con la reparación transcatéter de borde a borde (TEER). Se necesitan más investigaciones para las estrategias de tratamiento óptimas.

Palabras clave:
Prolapso del ritmo cardíacoRegurgitación mitral degenerativaReparación de la mitralcirugía de la válvula mitralReparación de borde a borde del transcatéterDisminución del ritmo ventricular

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Área de la Ciencia:

  • Cardiología
  • Cirugía cardíaca
  • Cardiología intervencionista

Sus antecedentes:

  • Las arritmias ventriculares (AV) ocurren en un subconjunto de pacientes con prolapso de la válvula mitral (PVM).
  • El impacto de los AV en la supervivencia postoperatoria después de la reparación mitral degenerativa sigue sin estar claro.
  • El MVP arritmico (AMVP) se define por regurgitación mitral degenerativa y AV.

Objetivo del estudio:

  • Comparar la supervivencia a largo plazo después de la reparación mitral degenerativa en pacientes con y sin VMA.
  • Evaluar los resultados secundarios, incluido el desfibrilador cardíaco implantable (ICD) y las readmisiones relacionadas con el AV.
  • Para informar las opciones de tratamiento para los pacientes con VMA.

Principales métodos:

  • Análisis retrospectivo de una base de datos nacional de seguros.
  • Comparación de la supervivencia a 5 años, la implantación de CDI y las readmisiones relacionadas con el AV entre pacientes con y sin VMA sometidos a reparación quirúrgica o RETE.
  • Ajuste multivariable para las diferencias basales; mediana de seguimiento de 3,8 años.

Principales resultados:

  • Entre los 20.980 pacientes, 1.745 tenían VMA.
  • La supervivencia a cinco años después de la reparación quirúrgica fue del 86% en pacientes con VMA frente al 81% en pacientes sin VMA (HR: 0,79, p=0,02).
  • La supervivencia a cinco años después de TEER fue del 34% en pacientes con VMA frente al 43% en pacientes sin VMA (HR: 1,26, p<0,001); las tasas de ECI fueron más altas después de la cirugía en pacientes con VMA.

Conclusiones:

  • La AMVP no se asocia con una peor supervivencia después de la reparación quirúrgica de la mitral.
  • La AMVP está asociada con una supervivencia significativamente peor después de la TEER.
  • Se necesitan estudios prospectivos para comprender la fisiopatología de la VMA y orientar las decisiones de tratamiento.