Cardiac allograft vasculopathy: A review
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Published on: May 14, 2013
Jessica A Laks1, Anne I Dipchand2
1Heart Institute, Johns Hopkins All Children's Hospital, St Petersburg, Florida, USA.
Insights
Cardiac allograft vasculopathy (CAV) is a major threat after pediatric heart transplantation. Early detection and effective treatments for CAV are crucial to improve long-term graft survival in these young patients.
Area of Science:
- Pediatric Cardiology
- Transplantation Immunology
- Cardiovascular Research
Background:
- Pediatric heart transplantation outcomes have improved, but cardiac allograft vasculopathy (CAV) remains a primary cause of death beyond three years.
- CAV significantly impacts morbidity and mortality in pediatric heart transplant recipients.
- Understanding CAV is critical for improving long-term graft survival in children.
Purpose of the Study:
- To provide a comprehensive overview of CAV in pediatric heart transplant recipients.
- To discuss the clinical presentation, risk factors, and diagnostic challenges of CAV.
- To highlight current therapeutic strategies and research needs for pediatric CAV.
Main Methods:
- Systematic literature search of Medline and Embase databases.
- Inclusion of articles in English focusing on pediatric heart transplant recipients and CAV.
- Analysis of identified articles for etiology, diagnosis, prognosis, risk factors, and treatment.
Main Results:
- Limited pediatric data exists on CAV etiology and development, though immune and non-immune factors are increasingly recognized.
- Current diagnostic methods for CAV are suboptimal, with no proven interventions to reverse established disease.
- CAV is linked to high graft loss rates, necessitating preventative and disease-modifying therapies.
Conclusions:
- This review synthesizes current knowledge on pediatric CAV, including its presentation, risk factors, and diagnostics.
- Effective management of CAV in pediatric heart transplant patients requires further research into novel therapeutic options.
- Addressing CAV is essential for improving long-term outcomes and reducing graft loss in this vulnerable population.
Background:
Heart transplantation has become the standard of care for pediatric patients with end-stage heart disease, and outcomes have consistently improved over the last few decades. CAV, however, remains a leading cause of morbidity and mortality in heart transplantation and is the leading cause of death beyond 3 years post-transplantation. We sought out to provide an in-depth overview of CAV in the pediatric heart transplant population.
Methods:
Database searches were conducted in both Medline and Embase on the topic of cardiac vasculopathy in pediatric heart transplant recipients. The search used five broad concept terms: heart transplant; pediatric; CAV; diagnosis, prognosis, and risk factors; and guidelines and reviews. References were captured if there was at least one term in each of the concepts. The search was limited to articles in the English language.
Results:
A total of 148 articles were identified via the literature search with further articles identified via review of references. Pediatric data regarding the etiology and development of CAV remain limited although knowledge about the immune and non-immune factors playing a role are increasing. CAV continues to be difficult to detect with many invasive and non-invasive methods available, yet their effectiveness in the detection of CAV remains suboptimal. There remains no proven medical intervention to treat or reverse established CAV disease, and CAV is associated with high rates of graft loss once detected. However, several medications are used in hopes of preventing, slowing progression, or modifying the outcomes.
Conclusion:
This review provides a comprehensive overview of CAV, discusses its clinical presentation, risk factors, diagnostic tools used to identify CAV in the pediatric population, and highlights the current therapeutic options and the need for ongoing research.
