R. Allen Ligon

ORCID: 0000-0002-1022-3430
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Research Areas
  • Congenital Heart Disease Studies
  • Congenital Diaphragmatic Hernia Studies
  • Cardiac Valve Diseases and Treatments
  • Pulmonary Hypertension Research and Treatments
  • Cardiovascular Conditions and Treatments
  • Tracheal and airway disorders
  • Cardiac Arrhythmias and Treatments
  • Neonatal Respiratory Health Research
  • Cardiac Structural Anomalies and Repair
  • Cardiovascular Issues in Pregnancy
  • Vascular anomalies and interventions
  • Mechanical Circulatory Support Devices
  • Coronary Artery Anomalies
  • Renal and Vascular Pathologies
  • Congenital heart defects research
  • Aortic Disease and Treatment Approaches
  • Cerebrovascular and Carotid Artery Diseases
  • Cardiovascular and Diving-Related Complications
  • Pediatric Pain Management Techniques
  • Cardiac Arrest and Resuscitation
  • Intracranial Aneurysms: Treatment and Complications
  • Shoulder Injury and Treatment
  • Neonatal Health and Biochemistry
  • Blood transfusion and management
  • Ultrasound in Clinical Applications

Emory University
2016-2025

Children's Healthcare of Atlanta
2016-2025

Joe DiMaggio Children's Hospital
2021-2022

Memorial Healthcare System
2021

Memorial Regional Hospital
2021

RELX Group (United States)
2020

Background: Infants with ductal-dependent pulmonary blood flow may undergo palliation either a patent ductus arteriosus (PDA) stent or modified Blalock-Taussig (BT) shunt. A balanced multicenter comparison of these 2 approaches is lacking. Methods: palliated PDA BT shunt from January 2008 to November 2015 were reviewed the 4 member centers Congenital Catheterization Research Collaborative. Outcomes compared by use propensity score adjustment account for baseline differences between groups....

10.1161/circulationaha.117.029987 article EN Circulation 2017-10-18

Abstract Objectives To devise a classification scheme for ductal morphology in patients with dependent pulmonary blood flow (PBF) that can be used to assess outcomes. Background The impact of on outcomes following patent ductus arteriosus (PDA) stenting is not well defined. Methods Patients <1 year age who underwent PDA PBF at the four centers comprising Congenital Catheterization Research Collaborative (CCRC) were included. A was devised based tortuosity index (TI)—Type I (straight),...

10.1002/ccd.28125 article EN Catheterization and Cardiovascular Interventions 2019-02-21

Self-expanding valve platforms are providing new and versatile options for transcatheter pulmonary replacement in patients with a large native or patched right ventricular outflow tract. We describe 4 cases of acute reintervention required after successful implantation an Alterra Adaptive Prestent followed by SAPIEN S3.

10.1016/j.jaccas.2024.102836 article EN cc-by JACC Case Reports 2025-01-08

In infants with ductal-dependent pulmonary blood flow, initial palliation patent ductus arteriosus (PDA) stent or modified Blalock-Taussig (BT) shunt have comparable mortality but discrepant length of stay, procedural complication rates and reintervention burdens, which may influence cost. The relative economic impact these strategies is unknown.Retrospective study flow palliated PDA (n=104) BT (n=251) from 2008 to 2015 at 4 centers the Congenital Catheterization Research Collaborative....

10.1161/circinterventions.118.007232 article EN Circulation Cardiovascular Interventions 2019-04-01

Cardiovascular disease (CVD) remains the leading cause of death in United States. However, percutaneous interventional cardiovascular therapies are often underutilized Blacks, Hispanics, and women may contribute to excess morbidity mortality these vulnerable populations. The Society for Angiography Interventions (SCAI) is committed reducing racial, ethnic, sex-based treatment disparities cardiology patients. Accordingly, each SCAI Clinical Interest Councils (coronary, peripheral, structural,...

10.1002/ccd.29745 article EN Catheterization and Cardiovascular Interventions 2021-04-28

Abstract Objective The purpose of this study was to review the outcomes following percutaneous carotid arterial (PCA) approach in infants and children with congenital heart disease. Background PCA access is becoming more commonly adopted reports demonstrating it a safe alternative surgical cutdown even femoral route. However, follow‐up after remain unreported. Methods We reviewed all cases catheterizations which included artery (CA) angiography between May 2012 until December 2016. examined...

10.1002/ccd.27481 article EN Catheterization and Cardiovascular Interventions 2018-01-23

Abstract Background Transcatheter right ventricle decompression in neonates with pulmonary atresia and intact ventricular septum is technically challenging, risk of cardiac perforation death. Further, despite successful decompression, re-intervention on the valve common. The association between technical factors during risks complications are not well described. Methods This a multicentre retrospective study among participating centres Congenital Catheterization Research Collaborative....

10.1017/s1047951118000756 article EN Cardiology in the Young 2018-06-18

Patients with single ventricle anatomy and ductal-dependent pulmonary blood flow may be initially palliated either modified Blalock-Taussig shunt (BTS) or ductus arteriosus stent (DAS). Comparisons of outcomes during the interstage period at time superior cavopulmonary connection (SCPC) are lacking differ between palliation strategies.Infants DAS BTS from 2008 to 2015 were reviewed across 4 centers. Interstage outcomes, for those who had SCPC, anatomy, hemodynamics, perioperative clinical...

10.1161/circinterventions.119.008110 article EN Circulation Cardiovascular Interventions 2019-10-01

Background In infants with ductal-dependent pulmonary blood flow, the impact of palliation strategy on interstage growth and feeding regimen is unknown. Methods Results This was a retrospective multicenter study flow palliated patent ductus arteriosus (PDA) stent or Blalock-Taussig shunt (BTS) from 2008 to 2015. Subjects defined interstage, time between initial subsequent repair, were included. Primary outcome change in weight-for-age Z-score. Secondary outcomes included % patients on: all...

10.1161/jaha.119.013807 article EN cc-by-nc-nd Journal of the American Heart Association 2019-12-19

We report a case of child with congenital heart disease who presented critical right ventricular outflow tract obstruction and history bilateral femoral vein occlusion. He underwent successful intervention, culminating in transcatheter pulmonary valve implantation, after recanalization completely obstructed vein. © 2016 Wiley Periodicals, Inc.

10.1002/ccd.26687 article EN Catheterization and Cardiovascular Interventions 2016-08-12
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