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Clinical Investigations: CARDIOLOGY |

Myocardial Infarction in Young Adults With Low-Density Lipoprotein Cholesterol Levels ≤ 100 mg/dL*: Clinical Profile and 1-Year Outcomes

Kwame O. Akosah, MD; Ross M. Cerniglia, BS; Paul Havlik, MS; Ana Schaper, PhD(c)
Author and Funding Information

*From the Gundersen Lutheran Medical Center, La Crosse, WI.

Correspondence to: Kwame O. Akosah, MD, Gundersen Lutheran Medical Center, 1836 South Ave, La Crosse, WI 54601; e-mail: kakosah@gundluth.org



Chest. 2001;120(6):1953-1958. doi:10.1378/chest.120.6.1953
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Study objectives: To define the clinical profile of young adults with optimal low-density lipoprotein (LDL) cholesterol levels who present with acute myocardial infarctions (MIs); to compare and contrast differences in the clinical profiles of young adults admitted to the hospital with MIs who have LDL cholesterol levels≤ 100 mg/dL and those with LDL cholesterol values ≥ 160 mg/dL; and to evaluate the clinical outcomes for the two groups at 1 year.

Design: A retrospective chart review was conducted on all young men (55 years) and women (65 years) admitted to the hospital for MIs within a 2-year period (n = 232). A history of cardiovascular risk factors and 1-year outcomes were obtained.

Setting: Rural community medical center serving a tri-state area in the midwestern United States.

Patients: Patients were included in this analysis if (1) a lipid profile was drawn within 24 h of hospital admission and (2) the patient was not receiving a statin medication on hospital admission.

Measurements and results: Of the 183 patients who met the inclusion criteria, as many as 68% (124 patients) had LDL cholesterol levels of ≤ 130 mg/dL, 29% (53 patients) had LDL cholesterol level of ≤ 100 mg/dL, and only 14% (26 patients) had LDL cholesterol levels of ≥ 160 mg/dL. Patients were categorized into group 1 if their LDL cholesterol level was ≤ 100 mg/dL and were categorized into group 2 if their LDL cholesterol level was ≥ 160 mg/dL. In group 2, 92% of patients were placed on a statin medication. By 1 year, the mean LDL cholesterol level had decreased from 188 to 106 mg/dL. The rate of coronary artery bypass graft and percutaneous coronary intervention procedures was similar between groups. Hospital readmission rates (43.4% vs 50%, respectively) and 1-year mortality rates (9% vs 8%, respectively) were not different between groups group 1 and 2.

Conclusions: Young adults experiencing acute MIs typically have acceptable cholesterol levels (ie, ≤ 130 mg/dL) or optimal values (ie, ≤ 100 mg/dL). In those patients with abnormal cholesterol levels, a combined strategy of aggressive intervention and adherence to secondary prevention protocols including lipid control is successful in improving outcomes.

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