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Related Concept Videos

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...

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Postnatal left ventricular diastolic function after fetal aortic valvuloplasty.

Kevin G Friedman1, Renee Margossian, Dionne A Graham

  • 1Department of Cardiology, Children's Hospital Boston, Boston, Massachusetts, USA. Kevin.Friedman@cardio.chboston.org

The American Journal of Cardiology
|June 1, 2011
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Fetal aortic balloon valvuloplasty (FAV) can lead to impaired left ventricular (LV) diastolic function. This diastolic dysfunction persists postnatally, potentially increasing risks for pulmonary hypertension.

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Area of Science:

  • Pediatric Cardiology
  • Fetal Intervention
  • Echocardiography

Background:

  • Fetal aortic balloon valvuloplasty (FAV) aims to prevent hypoplastic left heart syndrome from severe aortic stenosis.
  • Post-FAV biventricular circulation may impact left ventricular (LV) compliance.
  • Diastolic function assessment is crucial for understanding long-term outcomes.

Purpose of the Study:

  • To compare echocardiographic diastolic function in neonates and children with biventricular circulation post-FAV versus controls.
  • To evaluate the persistence of diastolic dysfunction in the short-term follow-up period.

Main Methods:

  • Retrospective echocardiographic analysis of diastolic function indexes.
  • Comparison between three groups: post-FAV with biventricular circulation, congenital aortic stenosis (AS), and age-matched controls.
  • Assessment of mitral annular early diastolic tissue velocity (E') and mitral inflow velocity/E' ratio.

Main Results:

  • Patients post-FAV showed more endocardial fibroelastosis and required more postnatal interventions than AS patients.
  • Lower mitral annular E' and higher early mitral inflow velocity/E' were observed in post-FAV patients compared to controls and AS patients, indicating diastolic dysfunction.
  • Diastolic dysfunction persisted throughout the follow-up period in the post-FAV group.

Conclusions:

  • Left ventricular diastolic dysfunction is prevalent in patients achieving biventricular circulation after FAV.
  • This dysfunction is evident neonatally and persists into short-term follow-up.
  • Persistent LV diastolic dysfunction may elevate the risk of left atrial hypertension and subsequent pulmonary hypertension.