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Clinical implementation of coronary computed tomography angiography for routine detection of cardiac allograft vasculopathy in heart transplant patients.
Clinical implementation of coronary computed tomography angiography for routine detection of cardiac allograft vasculopathy in heart transplant patients. Transplant international : official journal of the European Society for Organ Transplantation Nous, F. M., Roest, S., van Dijkman, E. D., Attrach, M., Caliskan, K., Brugts, J. J., Nieman, K., Hirsch, A., Constantinescu, A. A., Manintveld, O. C., Budde, R. P. 2021Abstract
Cardiac allograft vasculopathy (CAV) is an accelerated form of coronary artery disease that affects long-term outcomes in heart transplant (HTx) patients. We prospectively evaluated the feasibility of coronary computed tomography angiography (CCTA) for the detection of CAV during clinical implementation at our center. All consecutive HTx patients >4 years post-transplant were actively converted from myocardial perfusion imaging to CCTA for the annual assessment of CAV. Between February 2018 and May 2019, 129/172 (75%) HTx patients underwent a CCTA. Renal impairment (n=21/43) was the most frequent reason patients could not undergo CCTA. CCTA image quality was good-excellent in 118/129 (92%) patients and the radiation dose was 2.1 (1.6-2.8) mSv. CCTA showed obstructive CAV in 19/129 (15%) patients. Thirteen (10%) patients underwent additional tests, of which 8 patients underwent coronary revascularization within 90 days of CCTA. After 1 year, 3 additional coronary angiograms were performed, resulting in one revascularization in a patient with known severe CAV who developed ventricular tachycardia. One myocardial infarction after coronary stenting and 2 non-cardiac deaths were observed. CCTA can be successfully implemented for routine detection of CAV with good image quality and low radiation dose. CCTA allows CAV evaluation with limited need for additional invasive testing.
View details for DOI 10.1111/tri.13973
View details for PubMedID 34268796