ArticleJACC. Case reports2026
Coronary Steal Syndrome Caused by an Unligated RIMA Branch: Successful Treatment With Vascular Embolization.
Article in JACC. Case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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6 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundArterial conduits improve long-term outcomes in coronary bypass surgery, but persistent right internal mammary artery (RIMA) side branches can cause ischemia via coronary steal. CASE SUMMARY: A 62-year-old man presented with recurrent chest pain and non-ST-elevation myocardial infarction 1 year after coronary artery bypass graft (CABG) with RIMA, left internal mammary artery, and saphenous vein grafts. Evaluation showed significant stenosis of a vein graft and a large unligated RIMA side branch suspected of coronary steal. The side branch was successfully embolized, resulting in symptom resolution. DISCUSSION: Persistent RIMA side branches are a rare but important cause of recurrent ischemia after CABG. Literature suggests percutaneous embolization can effectively treat symptomatic cases. This case demonstrates the need for clinicians to consider coronary steal in post-CABG patients with unexplained angina. TAKE-HOME MESSAGE: Persistent RIMA side branches may cause ischemia post CABG and should be considered in patients with recurrent angina.
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