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Shunt Surgery, Right Heart Catheterization, and Vascular Morphometry in a Rat Model for Flow-induced Pulmonary Arterial Hypertension
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Shunt Surgery, Right Heart Catheterization, and Vascular Morphometry in a Rat Model for Flow-induced Pulmonary Arterial Hypertension

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Pulmonary arteriovenous malformations after the superior cavopulmonary shunt: mechanisms and clinical implications

Minoo N Kavarana1, Jeffrey A Jones, Robert E Stroud

  • 1Section of Pediatric Cardiothoracic Surgery, Department of Surgery, Medical University of South Carolina, 96 Jonathan Lucas Street, Charleston, SC 29425, USA.

Expert Review of Cardiovascular Therapy
|April 25, 2014
PubMed

Insights

Children with single ventricle heart disease undergo staged palliation. Investigating angiogenic pathways in pulmonary arteriovenous malformations after superior cavopulmonary connection can improve long-term outcomes and potentially delay Fontan completion.

Area of Science:

  • Pediatric Cardiology
  • Congenital Heart Surgery
  • Vascular Biology

Background:

  • Single ventricle heart disease requires staged surgical palliation, often involving a superior cavopulmonary connection (SCPC) as an intermediate step.
  • While SCPC offers palliation, its long-term durability is compromised by pulmonary arteriovenous malformations (PAVMs).
  • PAVMs are hypothesized to result from altered angiogenesis due to absent hepatic venous return and non-pulsatile pulmonary blood flow.

Purpose of the Study:

  • To investigate the angiogenic pathways involved in the pathogenesis of PAVMs following SCPC.
  • To identify potential therapeutic targets for preventing or reversing PAVMs.
  • To improve the longevity of SCPC and potentially defer or avoid Fontan completion.

Main Methods:

  • This study focuses on understanding the fundamental mechanisms of PAVM development.
  • It involves investigating specific angiogenic pathways implicated in the pathogenesis of PAVMs.
  • The research aims to elucidate the role of abnormal angiogenesis in PAVM formation post-SCPC.

Main Results:

  • The study hypothesizes abnormal angiogenesis as a key mechanism in PAVM development after SCPC.
  • Understanding these angiogenic pathways is crucial for developing targeted medical therapies.
  • This research lays the groundwork for future investigations into therapeutic interventions.

Conclusions:

  • Investigating angiogenic pathways in PAVMs is essential for improving outcomes in single ventricle patients.
  • Developing medical therapies targeting angiogenesis could enhance SCPC durability.
  • Such advancements may significantly improve long-term survival and quality of life by delaying or preventing Fontan completion complications.

Keywords:
Fontan operationangiogenesiscavopulmonary connectioncongenital heart diseasepulmonary arteriovenous malformationssingle ventriclesuperior

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