Impact of renal dysfunction on 1-year mortality after acute myocardial infarction

American Heart Journal
François SchieleJean-Pierre Bassand

Abstract

Survival after acute myocardial infarction (MI) is linked to multiple factors, including mild or severe chronic kidney dysfunction. The aim of this study was to determine to what extent a reduction in glomerular filtration rate (GFR) influences 1-year mortality when risk level at admission and quality of care are taken into account. A prospective registry was carried out in a geographically delimited area, including all patients admitted with a diagnosis of acute MI over a 6-month period. The GFR was calculated from serum creatinine levels, and patients were stratified into 3 groups: GFR1 >59 mL/min per 1.73 m2, GFR2 >29 and <60 mL/min per 1.73 m2, and GFR3 <30 mL/min per 1.73 m2. A risk index based on initial presentation was calculated. Inhospital and discharge treatments were recorded, taking into account possible contraindications. Patients were followed up for 1 year to assess all-cause mortality rate. A total of 754 patients were included, 333 ST-elevation MI and 421 non-ST-elevation MI. Overall 1-year mortality was 11.5%. Patients with impaired GFR were older, with more comorbidities, and received fewer effective therapies (less reperfusion, glycoprotein IIb/IIIa receptor inhibitors, early angiography, beta-blockers, and...Continue Reading

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