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Diagnosis of cardiac allograft vasculopathy: Challenges and opportunities
Bhavesh Patel1, Aashish Ahuja1, Ghassan S Kassab1
1California Medical Innovations Institute, 11107 Roselle Street, San Diego CA 92121.
Insights
Early detection of cardiac allograft vasculopathy (CAV) is crucial for heart transplant recipients. This review explores advanced imaging techniques and biomarkers to improve CAV diagnosis and management.
Area of Science:
- Cardiology
- Transplantation Medicine
- Medical Imaging
Background:
- Cardiac allograft vasculopathy (CAV) is a primary long-term complication after heart transplantation.
- Early detection of CAV is vital due to its irreversible nature and impact on patient outcomes.
- Current diagnostic methods like coronary angiography have limitations in sensitivity, particularly for early-stage disease.
Purpose of the Study:
- To review current and emerging imaging techniques for diagnosing CAV.
- To discuss advancements in diagnostic analysis and potential biomarkers for CAV.
- To explore novel insights into microvascular function and anticoagulant properties in severe CAV.
Main Methods:
- Comprehensive literature review of imaging modalities for CAV diagnosis.
- Analysis of recent advances in coronary artery disease imaging and their applicability to CAV.
- Identification and discussion of potential CAV biomarkers.
Main Results:
- Standard coronary angiography shows limited sensitivity for early CAV detection.
- Intravascular ultrasonography offers improved reliability but is restricted to epicardial vessels.
- Non-invasive techniques like stress echocardiography and nuclear imaging have limitations but are advancing.
Conclusions:
- Enhanced imaging techniques and analyses are required to overcome current diagnostic limitations for CAV.
- Translating advances in coronary artery disease diagnostics holds promise for improved CAV detection.
- Biomarker discovery and understanding microvascular changes are key future directions in CAV management.
Abstract:
Cardiac allograft vasculopathy (CAV) is one of the most common long-term complications in patients following heart transplantation. Because of its irreversible nature, early detection is essential to impact progression. Thus, imaging techniques play a crucial role in the diagnosis and subsequent treatment. Major advancements in imaging and analysis are required to overcome the limitations of current techniques. Coronary angiography which is the standard method, presents low sensitivity in detection, especially at an early stage. Intravascular ultrasonography is a more reliable alternative but is limited to the epicardial vessels. Novel non-invasive techniques, such as stress echocardiography and nuclear imaging, have been introduced but not without limitations. Here, we review various imaging methods and associated analyses to improve diagnostic predictions. We discuss recent advances in the diagnosis of coronary artery disease and their potential translation in the diagnosis of CAV. Additionally, we present potential biomarkers that have been identified for CAV. Finally, we provide a discussion on microvessels with novel anticoagulant properties that are mostly identified in patients with severe CAV.
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