https://doi.org/10.4081/monaldi.2024.2890
Screening of cardiac allograft vasculopathy in heart transplant patients with coronary computed tomography angiography
Accepted: January 29, 2024
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Authors
Although coronary angiography (CA) is the gold standard for coronary allograft vasculopathy (CAV) screening, non-invasive modalities have arisen as potential alternatives, such as coronary computed tomography angiography (CCTA). CCTA also quantifies plaque burden, which may influence medical treatment. From January 2021 to April 2022, we prospectively included heart transplant recipients who performed CCTA as a first-line method for CAV detection in a single center. Clinical, CCTA, and CA data were collected. 38 patients were included, 60.5% men, aged 58±14 years. The most frequent cause of transplantation was dilated cardiomyopathy (42.1%), and the median graft duration was 10 years [interquartile range (IQR) 9]. The median left ventricle ejection fraction was 61.5% (IQR 6). The median calcium score was 17 (IQR 231) and 32 patients (84.2%) proceeded to CCTA: 7, 24, and 1 patients had a graded CAV of 0, 1, and 2, respectively. Most patients (37.5%) had both calcified and non-calcified plaques, and the median number of affected segments was 2 (IQR 3). The remaining six patients had extensive coronary calcification, so CA was performed: 4 had CAV1, 1 had CAV2, and 1 had CAV3. During follow-up (12.2±4.2 months), there were neither deaths nor acute coronary syndromes. After CCTA, therapeutic changes occurred in about 10 (26.3%) of patients, mainly related to anti-lipid intensification; such changes were more frequent in patients with diabetes after heart transplant. In this cohort, CCTA led to therapeutic changes in about one-quarter of patients; more studies are needed to assess how CCT may guide therapy according to plaque burden.
Ethics Approval
The study was performed according to the recommendations of the Helsinki Declaration and patients’ consent was acquired. Observational studies are not mandatory to be proposed to the local ethical committee.How to Cite
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