Outcomes of patients with prior coronary artery bypass graft who present with acute coronary syndrome

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Generally, patients with prior coronary artery bypass graft (CABG) are often under-represented in acute coronary syndrome (ACS) clinical trials. Nevertheless, there is growing global attention concerning their short- and long-term prognosis. Some reports suggest prior CABG as an independent risk factor for increased mortality, while others report an equal or a more favorable prognosis despite their adverse baseline clinical characteristics. The reasons for this ‘risk-mortality paradox’ need to be further evaluated. More recent reports showed a significant reduction in in-hospital morbidity and mortality over a 20-year period of follow up that may be attributed to the improvement in surgical CABG techniques and increased use of evidence-based therapies over the past two decades. In the current review we discuss the available literature regarding outcomes of prior CABG patients who are presenting with ACS.

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