Key result
Left subclavian artery thrombosis compromises LIMA flow and causes fatal ischemic VT after CABG.
Case Report (n=1)
Highlights that left subclavian artery thrombosis can compromise left internal mammary artery graft flow and cause ischemic ventricular tachycardia in patients with prior CABG.
Clinicians should consider subclavian thrombosis in post-CABG patients with ischemic VT; single case leaves open need for prospective validation.
Inter-arm variability in blood pressure readings typically signifies arterial disease between the aortic arch and the subclavian artery. The differential diagnosis includes thoracic aortic dissection, atherosclerosis, thoracic outlet syndrome, and subclavian artery stenosis and thrombosis. In patients with prior coronary artery bypass grafting, including the internal mammary artery, several of those conditions can compromise coronary blood flow and lead to myocardial ischemia. Here we discuss a case of left subclavian artery thrombosis, which compromised left internal mammary artery blood flow and led to ischemic ventricular tachycardia.
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Hmiel et al. (2020) conducted a case report in Subclavian artery thrombosis (n=1). Subclavian artery thrombosis was evaluated. A 72-year-old man with prior coronary artery bypass grafting developed a left subclavian artery thrombosis that compromised left internal mammary artery blood flow, leading to fatal ischemic ventricular tachycardia.
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