Coronary artery disease
Comparison of Outcomes in Patients Aged <75, 75 to 84, and ≥85 Years With ST-Elevation Myocardial Infarction (from the ACTION Registry-GWTG)

https://doi.org/10.1016/j.amjcard.2010.07.008Get rights and content

ST-segment elevation myocardial infarction (STEMI) is common in older adults and has high age-related mortality. We describe contemporary STEMI care using the National Cardiovascular Data Registry Acute Coronary Treatment and Intervention Network Registry–Get With The Guidelines (ACTION-GWTG) database. Patients with STEMI (n = 30,188) from 285 ACTION-GWTG sites from January 1, 2007 to June 30, 2008 were grouped by age (<75, 75 to 84, and ≥85 years) to compare baseline characteristics, reperfusion, and in-hospital outcomes. In this population, 79.7% (24,070) were <75 years old, 14.2% (4,273) were 75 to 84 years old, and 6.1% (1,845) were ≥85 years old (the oldest old). Compared to younger patients, the oldest-old patients (median age 88 years, interquartile range 86 to 91) were more often women, had more hypertension, and end-organ co-morbidity (heart failure and stroke, p <0.0001 for all). More than 42% of the oldest old were also cited as having contraindications to reperfusion, but with absolute or relative contraindications noted in only 10%, and patient preference was the most common reason indicated (45%). Even in reperfusion-eligible patients, the oldest old were less likely to receive it. Although patients who received reperfusion had better outcomes than those who did not, this was significant only for younger patients (<75 years old, odds ratio 0.58, confidence interval 0.40 to 0.84). In conclusion, >42% of the oldest old have reported contraindications to reperfusion, with neither mortality benefit nor harm in those who receive it. Disparities in process of care and co-morbidity may explain these observational findings. Whether efforts to optimize patient selection and initiate reperfusion therapy can improve outcomes in the oldest old with STEMI is unknown.

Section snippets

Methods

The ACTION-GWTG is part of the National Cardiovascular Data Registry and was created to evaluate and improve the quality of MI care.15 Participating ACTION-GWTG hospitals enroll consecutive patients with a primary diagnosis of STEMI or non-STEMI. At most hospitals, patients are retrospectively identified and are deemed ineligible if admitted for conditions unrelated to MI. In all instances, patient care decisions are the responsibility of the treating physicians. Criteria for patients with

Results

Of the 30,188 patients with STEMI selected, 79.7% (24,070) were <75 years old, 14.2% (4,273) were 75 to 84 years old, and 6.1% (1,845) were ≥85 years old (e.g., the oldest old). The oldest-old patients were mostly women, were not recent smokers, and had less diabetes mellitus and hyperlipidemia. This group had higher prevalence of end-organ co-morbidity (previous heart failure and stroke; Table 1). They also had lower creatinine clearance and higher B-type natriuretic peptide levels than the

Discussion

The oldest-old population comprises about 6% of the STEMI population. This special group has a fourfold higher in-hospital mortality compared to younger patients, a hazard that persists after adjustment and irrespective of reperfusion status. Our data further demonstrate that 42% of the oldest old have contraindications to the reperfusion cited, with patient preference being the primary factor determining this designation. Furthermore, even when the oldest old are deemed eligible for

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    The ACTION Registry-GWTG is a program of the National Cardiovascular Data Registry with support from the American College of Cardiology and the American Heart Association that receives funding by the Schering-Plough Corporation, Whitehouse Station, New Jersey, and Bristol-Myers Squibb/Sanofi Pharmaceutical Partnership, New York, New York.

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