Coronary-subclavian steal syndrome (CSSS) is a rare complication of coronary artery bypass graft (CABG) surgery. We describe the case of a 72-year-old male patient who presented with chest pain and hypotension 24 h after CABG surgery. The angiography showed reduced blood flow to the left anterior descending (LAD) artery and severe left proximal subclavian artery stenosis (SAS). The patient underwent successful left subclavian artery stenting. All patients considered for CABG surgery should be screened with bilateral non-invasive brachial blood pressure prior to surgical referral and differences greater than 10 mm Hg between arms warrant additional testing.

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