Characteristics and In-Hospital Outcomes of Female Patients Presenting with ST-Segment-Elevation Myocardial Infarction without Standard Modifiable Cardiovascular Risk Factors

Document Type

Article

Publication Date

12-2024

Abstract

Background: Standard Modifiable Cardiovascular Risk Factors (SMuRF) such as hypertension, diabetes mellitus, hyperlipidemia, and smoking have long been established in the etiology of atherosclerotic disease. We evaluate in-hospital outcomes of female STEMI patients without these risk factors. Methods: The National Inpatient Sample databases (2016 to 2021) were queried to identify STEMI admissions as a principal diagnosis using ICD 10 codes. Patients with a history of coronary artery disease, myocardial infarction, coronary bypass graft, percutaneous coronary intervention, takotsubo cardiomyopathy, cocaine abuse, and spontaneous coronary dissection and males were excluded from our study population. A final study population aged >18 years was divided into cohorts of SMuRF and SMuRF-less based on the presence of ≥1 risk factor. Multivariate logistic regression model adjusting for baseline characteristics and comorbidities. The primary outcome was in-hospital mortality. The secondary outcomes are STEMI-related complications and the use of mechanical circulatory support devices. Results: 200,980 patients were identified. 187,776 (93.4 %) patients were identified as having ≥1 SMuRF, and 13,205 (6.6 %) patients were SMuRF-less. Compared to SMuRF patients, SMuRF-less patients are more likely to be white (75.6 % vs. 73.1 %, p < 0.01) and older median age (69 years [IQR: 58–78] vs 67 years [IQR: 57–81], p < 0.01). In comparing co-morbidities, SMuRF-less patients were less likely to have heart failure (28.0 % vs. 23.4 %, p < 0.01), atrial fibrillation/flutter (16.1 % vs. 14.6 %, p = 0.03), chronic pulmonary disease (18.9 % vs. 9.5 %, p < 0.01), obesity (20.7 % vs. 9.2 %, p < 0.01) and aortic disease (1.1 % vs. 0.6 %, p < 0.01). They were however more likely to have dementia (6.9 % vs. 5.7 %, p < 0.01). In evaluating outcomes, SMuRF-less patients had higher in-hospital mortality (aOR 3.2 [95 % CI, 2.9–3.6]; p < 0.01), acute heart failure (aOR 1.6 [95 % CI, 1.4–1.8]; p < 0.01), acute kidney injury (aOR 1.8 [95 % CI, 1.7–2.1]; p < 0.01), and Intra-aortic balloon pump (aOR 1.7 [95 % CI, 1.5–1.9]; p < 0.01). Predictors of higher mortality in SMuRF-less patients include chronic liver disease (OR 6.8, CI 2.4–19.4, p < 0.01), and Hispanic race (OR 1.62, CI 1.1–2.5, p < 0.01). We also found that SMuRF-less patients were less likely to undergo coronary angiography (aOR 0.5 [95 % CI, 0.4–0.5]; p < 0.01) and percutaneous coronary intervention (aOR 0.7 [95 % CI, 0.6–0.8]; p < 0.01). Conclusion: Female SMuRF-less patients presenting with STEMI have worse in-hospital outcomes when compared to patients with ≥1SMuRF.

Publication Title

Current Problems in Cardiology

Volume

49

Issue

12

First Page

102830

Last Page

102830

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