Published in:
Open Access
01-12-2009 | Research article
The challenge to detect heart transplant rejection and transplant vasculopathy non-invasively - a pilot study
Authors:
Engin Usta, Christof Burgstahler, Hermann Aebert, Stephen Schroeder, Uwe Helber, Andreas F Kopp, Gerhard Ziemer
Published in:
Journal of Cardiothoracic Surgery
|
Issue 1/2009
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Abstract
Background
Cardiac allograft rejection and vasculopathy are the main factors limiting long-term survival after heart transplantation.
In this pilot study we investigated whether non-invasive methods are beneficial to detect cardiac allograft rejection (Grade 0-3 R) and cardiac allograft vasculopathy. Thus we compared multi-slice computed tomography and magnetic resonance imaging with invasive methods like coronary angiography and left endomyocardial biopsy.
Methods
10 asymptomatic long-term survivors after heart transplantation (8 male, 2 female, mean age 52.1 ± 12 years, 73 ± 11 months after transplantation) were included. In a blinded fashion, coronary angiography and multi-slice computed tomography and ventricular endomyocardial biopsy and magnetic resonance imaging were compared against each other.
Results
Cardiac allograft vasculopathy and atherosclerosis were correctly detected by multi-slice computed tomography and coronary angiography with positive correlation (r = 1). Late contrast enchancement found by magnetic resonance imaging correlated positively (r = 0.92, r2 = 0.85, p < 0.05) with the histological diagnosis of transplant rejection revealed by myocardial biopsy. None of the examined endomyocardial specimen revealed cardiac allograft rejection greater than Grade 1 R.
Conclusion
A combined non-invasive approach using multi-slice computed tomography and magnetic resonance imaging may help to assess cardiac allograft vasculopathy and cardiac allograft rejection after heart transplantation before applying more invasive methods.