Regardless of age or mental capacity, percutaneous coronary intervention (PCI) is the first line of treatment for ST-elevated myocardial infarction (STEMI). This study evaluates the disparities in the use of diagnostic cardiac catheterization and PCI in STEMI patients with dementia. A retrospective analysis was performed of Florida‟s comprehensive inpatient surveillance system for the years 2006-2007 with admission diagnosis of STEMI. Logistic regression analysis was used to identify disparities in the use of intervention among all STEMI patients. A total of 8,331 STEMI patients met the inclusion criteria. Of these, 77% were catheterized and of these 67% received PCI. A total of 605 (7.3%) were demented. Patients with dementia were less likely to be catheterized (RR 0.4, 95% CI 0.3-0.5) and less likely to receive PCI within 24 hours (RR 0.5, 95% CI 0.4-0.6). This study concludes that STEMI patients with dementia were much less likely to receive cardiovascular interventions