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Wellens syndrome is characterised by changes in electrocardiogram precordial lead T-waves accompanied by proximal stenosis of the left anterior descending artery. Diagnostic criteria include T-wave changes plus a history of anginal chest pain without serum marker abnormalities, with significant ST-segment elevation and lack of Q waves. Wellens syndrome results in anterior wall acute myocardial infarction and cardiac death. We describe the case of a 33-year-old man who presented to the emergency clinic with cardiac arrest.