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Published on: May 28, 2019
Coronary ischemia due to subclavian stenosis after arterial revascularization
Carlo Zebele1, H Ibrahim Ozdemir, Mohamed A Soliman Hamad
1Department of Cardiothoracic Surgery, Catharina Hospital, Eindhoven, The Netherlands. aasmsn@cze.nl
Insights
Coronary-subclavian steal syndrome occurred 16 years after bypass surgery due to left subclavian artery stenosis. A reoperation successfully restored blood flow, resolving coronary ischemia.
Area of Science:
- Cardiovascular Surgery
- Vascular Surgery
- Interventional Cardiology
Background:
- Coronary artery bypass grafting (CABG) using internal thoracic artery (ITA) grafts is a standard procedure.
- Long-term complications of CABG can include graft failure or issues related to adjacent vasculature.
- Coronary-subclavian steal syndrome (CSSS) is a rare complication affecting arterial grafts.
Observation:
- A 60-year-old male presented with progressive ischemic symptoms 16 years post-CABG.
- The patient had undergone CABG with bilateral in-situ internal thoracic artery grafts.
- Angiography demonstrated patent arterial grafts but significant stenosis of the left subclavian artery.
Findings:
- The patient exhibited symptoms consistent with coronary-subclavian steal syndrome.
- The underlying cause was identified as subtotal stenosis of the left subclavian artery, compromising flow to the left internal thoracic artery graft.
- Surgical intervention involved a reoperation using a vein graft to bypass the disrupted proximal left internal thoracic artery.
Implications:
- Successful revascularization resolved the coronary ischemia, highlighting the importance of recognizing and treating CSSS.
- This case underscores the potential for late complications even with widely patent arterial grafts.
- Management strategies for CSSS may involve revascularization of the affected subclavian artery or bypass grafting to the compromised ITA.
Abstract:
We describe a case of coronary-subclavian steal in a 60-year-old man who presented with progressive ischemia 16 years after coronary artery bypass with in-situ bilateral internal thoracic artery grafts. Angiography revealed completely patent arterial grafts, but subtotal stenosis of the left subclavian artery. On reoperation, a vein graft was used to connect the aorta to the left internal thoracic artery which was proximally disrupted. No coronary ischemia was found postoperatively.
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