19 September 2022 : Case report
[In Press] Coronary Subclavian Steal Syndrome in a 73-Year-Old Woman Presenting with Angiographically Confirmed Subclavian Artery Stenosis Proximal to the Left Internal Mammary
Challenging differential diagnosis, Management of emergency care, Clinical situation which can not be reproduced for ethical reasons, Rare coexistence of disease or pathologyJared Steinberger1ABCDEFG, Fawaz Georgie1ABCDE, Marcel Zughaib1ABCDEF
Am J Case Rep In Press; DOI: 10.12659/AJCR.937015
Available online: 2022-09-19, In Press, Corrected Proof
Publication in the "In-Press" formula aims at speeding up the public availability of the pending manuscript while waiting for the final publication. The assigned DOI number is active and citable. The availability of the article in the Medline, PubMed and PMC databases as well as Web of Science will be obtained after the final publication according to the journal schedule
Coronary subclavian steal syndrome (CSSS) is an uncommon condition in which a high-grade stenosis of the subclavian artery proximal to an internal mammary artery bypass graft results in retrograde blood flow of the bypass graft. This report is of CSSS in a 73-year-old woman who presented with ventricular tachycardia and angiographically confirmed subclavian artery stenosis proximal to the left internal mammary artery (LIMA) bypass graft 3 years following coronary artery bypass grafting (CABG).
The patient was a 73-year-old woman with a past medical history of multivessel coronary artery disease, found on preoperative evaluation. She underwent 2 vessel CABG in 2018. She was found to have ischemic cardiomyopathy, ejection fraction of 30% to 35% despite revascularization, and an implantable cardiac defibrillator (ICD). Three years following uncomplicated CABG, the patient presented with angina and sustained ventricular tachycardia; ICD therapy was unsuccessful. Ischemia was the etiology of the sustained ventricular tachycardia, and the patient underwent cardiac catheterization, demonstrating high-grade subclavian artery stenosis proximal to the LIMA bypass graft. Intervention of the 80% lesion of the native left anterior descending artery was done with placement of a 2.75×16-mm drug-eluting stent. The patient responded well to treatment, with no subsequent ventricular tachycardia on outpatient follow-up.
This report has shown that in patients who present with symptoms of acute coronary syndrome and a history of CABG involving the LIMA, the possibility of CSSS should be considered and investigated by coronary artery imaging so that diagnosis and management are not delayed.
Keywords: Coronary Artery Disease
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