Abstract 17263: Outcomes and Trends of Percutaneous Coronary Intervention in Nonagenarians With Acute Myocardial Infarction: Results From National Inpatient Sample 2016-2020

Abstract

Background: Acute myocardial infarction (MI) is a leading cause of mortality and morbidity among the elderly. Multiple co-morbidities and advanced age often impede the need for cardiac catheterization in these patients. The literature studying percutaneous coronary intervention (PCI) in nonagenarian patients with acute MI is limited. Methods: We examined hospitalized acute MI patients with age 90 or above that were included in the National Inpatient Sample 2016-2020. Acute MI was defined by using the International Classification of Diseases -10. Patients aged less than 90 years were excluded. Outcomes were expressed as percentages. Multivariable logistic regression analysis was used to examine the association of PCI and age 90 or above with primary outcome of mortality, and secondary outcomes [ Figure1]. We also studied the yearly trends of PCI in nonagenarian patients with acute MI patients. Results: Of the total hospitalized patients with acute MI (n = 3,120,759), 4.6% (n=142,675) patients were aged 90 years or above. Of these, 9.4% (n= 3,615) died in PCI group and 12.7% (n= 13,215) died in non - PCI group. PCI was performed in 27% (n= 38,430) of the nonagenarian patients with acute MI. The most common outcomes in PCI group were acute heart failure (37.5%), Acute kidney injury (28 %), and atrial arrhythmia (23%). PCI in nonagenarian patients with acute MI was associated with decreased odds of mortality (OR 0.75, 95% CI 0.68-0.82, p value <0.001) and having any of the secondary outcomes (OR 0.74, 95% CI 0.69- 0.79, p value <0.001) [Figure 1]. From 2016-2020, there are increasing yearly trends of PCI in nonagenarian patients with acute MI (p value <0.001). Conclusion: Acute MI in elderly patients is associated with significant increased mortality and adverse events. PCI in acute MI patients with age 90 years or above was associated with decreased odds of mortality.