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The Relationship Between Low-Density Lipoprotein Cholesterol Goal Attainment and Prevention of Coronary Heart Disease-Related EventsDepartment of Pharmacy Practice at the School of Pharmacy and Health Sciences, University of the Pacific, Stockton, CA; Cardiovascular Pharmacodynamics Laboratory at the VA San Diego Healthcare System
Cardiovascular Pharmacodynamics Laboratory at the VA San Diego Healthcare System
Department of Pharmacy Practice at the School of Pharmacy and Health Sciences, University of the Pacific, Stockton, CA; Cardiovascular Pharmacodynamics Laboratory at the VA San Diego Healthcare System Background: According to the National Cholesterol Education Program (NCEP) treatment guidelines, patients with preexisting coronary heart disease (CHD) or other atherosclerotic vascular disease should lower low-density lipoprotein (LDL) cholesterol to < 100 mg/dL. Recent statin trials document the benefit of cholesterol lowering on CHD events but do not address the optimal goal of LDL cholesterol. Methods: The pravastatin to simvastatin conversion-lipid optimization program (PSCOP) at the VA San Diego Healthcare System (VASDHS) was a formulary-conversion program designed to increase the percentage of patients who meet their recommended NCEP LDL cholesterol goal. We compared the incidence of clinical outcome and mortality between CHD patients from the original PSCOP cohort with postconversion LDL cholesterol greater than and < 100 mg/dL. A total of 524 patients were stratified by postconversion LDL cholesterol levels (greater than [N=183]) or < 100 mg/dL [N=341]) and observed for a mean duration of 27.7 months. Patients' VASDHS records were reviewed for postconversion mortality from any cause and CHD-related events. Patients were mailed a questionnaire to capture similar events that may have occurred outside of VASDHS, which might not be present in the patient's VASDHS record.
Results: Lipid-lowering therapy Conclusions: Our study results support reducing LDL cholesterol to at least 100 mg/dL in the patient with CHD.
Key Words: LDL cholesterol • treatment goals • simvastatin • pravastatin
Journal of Cardiovascular Pharmacology and Therapeutics, Vol. 6, No. 2,
129-135 (2001) |
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100 mg/dL was associated with a significantly lower percentage of total deaths and CHD-related events (40% vs 61%, P=0.008). In patients with LDL cholesterol >100 mg/dL, the relative risk of unstable angina (relative risk, 2.2; 95% confidence interval, 1.3 to 3.8; P=0.004) and stroke (relative risk, 3.0; 95% confidence interval, 1.04 to 8.6; P=0.04) were significantly greater compared to patients meeting their LDL cholesterol goal.