Dobutamine Stress Cardiac Magnetic Resonance Imaging for Patients With Anomalous Inter-Arterial Coronary Arteries
- Author:
Pak Lun LAM
1
;
Christie Ho Ting WONG
;
Sonia Hiu Yin LAM
;
Thomas Wei Lam YIP
;
Yuen Hei MAK
;
Carmen Wing Sze CHAN
;
Stephen Chi Wai CHEUNG
Author Information
- Publication Type:ORIGINAL ARTICLE
- From: Cardiovascular Imaging Asia 2026;10(1):11-19
- CountryRepublic of Korea
- Language:English
-
Abstract:
Objective:This study aims to review the application of dobutamine stress cardiac magnetic resonance imaging (DSCMR) for patients with anomalous inter-arterial coronary arteries.
Materials and Methods:Consecutive adult patients (≥18 years) with anomalous inter-arterial coronary arteries and DSCMR performed in a quaternary referral center from January 2020 to December 2024 were retrospectively reviewed. Examination details, including medication and complications, were reviewed. Radiological findings, such as wall motion abnormality, perfusion defect and late myocardial enhancement were evaluated. Post-examination management and outcomes were assessed.
Results:A total of 31 patients (17 females [54.8%]; age 53.6±11.7 years) with anomalous inter-arterial coronary arteries were included. Most patients (n=25, 80.6%) had anomalous right coronary artery. There were significant differences in peak heart rate (p<0.001) and blood pressure (p<0.001) when compared to the baseline. Only one patient (3.2%) experienced minor adverse event with chest pain during the examination. Her cardiac enzymes and electrocardiogram were normal. All other patients (n=30, 96.8%) had no examination-related complications. Left ventricular stroke volume (78.3 [interquartile range, IQR 15.8] mL) and ejection fraction (63.2% [IQR 9.2%]) were normal. No wall motion abnormality, perfusion defect nor late myocardial enhancement were identified. Median follow-up after DSCMR was 21.0 (IQR 28.0) months. One patient underwent reimplantation of right coronary artery due to recurrent syncope. Conservative management was adopted for all other patients (n= 30, 96.8%). Most (n=28, 90.3%) were asymptomatic post-examination. No major adverse cardiovascular events were reported.
Conclusion:DSCMR can be safely performed for patients with anomalous inter-arterial coronary arteries and can help guide management plan.
