Improving lipid evaluation and management in medicare patients hospitalized for acute myocardial infarction.
BACKGROUND: The control of low-density lipoprotein cholesterol (LDL-C) levels in patients with known coronary artery disease, particularly in those with acute myocardial infarction, has been shown to reduce the rates of disease progression, recurrent events, and mortality. OBJECTIVES: To evaluate and improve hospital-based processes for measuring and treating, when necessary, LDL-C levels above 3.36 mmol/L (>130 mg/dL) in patients with an acute myocardial infarction. DESIGN: A nonrandomized retrospective baseline study followed by a collaborative educational intervention with participating hospitals and a second nonrandomized postintervention study. PATIENTS: Four hundred six preintervention patients discharged from the hospital alive after a confirmed acute myocardial infarction in 1996, and 498 postintervention patients discharged from the hospital in 1999. INTERVENTIONS: Performance of lipid profiles on admission to the hospital and during hospitalization and drug and dietary interventions. RESULTS: The measurement of LDL-C level on admission to the hospital increased from 8% preintervention in 1996 to 32% postintervention in 1999. The measurement during hospitalization increased from 14% preintervention to 48% postintervention. Hospitals that initiated programs to ensure early lipid evaluations through preprinted orders and policy changes achieved an average patient LDL-C measurement rate of 70% in 1999. Hospitals lacking standard policies averaged only 23% at the same time. Of the patients with a measured LDL-C level greater than 3.36 mmol/L (>130 mg/dL) who were not undergoing drug therapy on admission to the hospital, 46% were given lipid-lowering agents by discharge from the hospital during the postintervention period. During this same period, only 11% of the patients were prescribed this therapy if they had either a lower measured level or no LDL-C measurement at all. CONCLUSION: Active hospital-based programs to ensure routine LDL-C measurements in patients admitted for acute myocardial infarction increased the use of appropriate lipid-lowering therapy in these high-risk individuals and could contribute to reducing the incidence of recurrent coronary artery disease.