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Updated: Aug 14, 2026
A Pre-Clinical Porcine Model of Orthotopic Heart Transplantation
Published on: April 27, 2019
Prognostic value of noninvasive testing one year after orthotopic cardiac transplantation
P P Verhoeven1, F A Lee, T M Ramahi
1Department of Internal Medicine (Section of Cardiovascular Medicine), Yale University School of Medicine, New Haven, Connecticut 06520-8042, USA.
Insights
Normal thallium-201 stress myocardial perfusion imaging one year after cardiac transplantation predicts 5-year survival. This noninvasive test is a key indicator for long-term outcomes in heart transplant recipients.
Area of Science:
- Cardiology
- Transplantation Medicine
- Diagnostic Imaging
Background:
- Coronary artery vasculopathy is a leading cause of late mortality post-cardiac transplantation.
- Traditional noninvasive tests have limited sensitivity in detecting angiographic vasculopathy.
- Identifying reliable prognostic markers is crucial for managing heart transplant recipients.
Purpose of the Study:
- To assess the prognostic value of routine noninvasive tests one year after heart transplantation.
- To determine if stress thallium-201 imaging, echocardiography, or radionuclide angiography predicts long-term survival.
- To identify key clinical factors influencing survival post-transplant.
Main Methods:
- Prospective analysis of noninvasive testing results in 47 heart transplant recipients alive at one year.
- Correlation of test outcomes with subsequent 5-year survival.
- Inclusion of clinical variables associated with coronary artery vasculopathy development.
Main Results:
- The 5-year survival rate was 81%.
- Stress thallium-201 imaging and echocardiography predicted survival (univariate analysis).
- Multivariate analysis identified normal thallium-201 stress imaging as the sole significant predictor of survival (RR 0.27).
Conclusions:
- Normal thallium-201 stress myocardial perfusion imaging one year post-transplant is a significant predictor of 5-year survival.
- This noninvasive imaging technique offers valuable prognostic information for heart transplant recipients.
Objectives:
We sought to evaluate the prognostic value of routine noninvasive testing--stress thallium-201 imaging, rest two-dimensional echocardiography and rest equilibrium radionuclide angiography--1 year after cardiac transplantation.
Background:
Coronary artery vasculopathy is the most important cause of late death after orthotopic cardiac transplantation. Several clinical variables have been identified as risk factors for development of coronary vasculopathy. Traditional noninvasive diagnostic testing has been shown to be relatively insensitive for identifying patients with angiographic vasculopathy.
Methods:
Results of prospectively acquired noninvasive testing in 47 consecutive transplant recipients alive 1 year after transplantation were related to subsequent survival. Other clinical variables previously shown to be associated with the development of coronary artery vasculopathy were also included in the analysis.
Results:
The 5-year survival rate after cardiac transplantation was 81%. By univariate analysis, echocardiography (chi-square 9.21) and stress thallium-201 myocardial perfusion imaging (chi-square 16.76) were predictive for survival, whereas rest equilibrium radionuclide angiography was not. Clinical contributors to survival were donor age (chi-square 4.56), number of human leukocyte antigen mismatches (chi-square 3.06) and cold ischemic time (chi-square 3.23). By multivariate analysis, stress myocardial imaging remained the only significant predictor of survival (risk ratio 0.27; 95% confidence interval 0.06 to 0.89).
Conclusions:
Normal thallium-201 stress myocardial perfusion imaging 1 year after cardiac transplantation is an important predictor of 5-year survival.
