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These studies suggest that the LDL-C goal for individuals with coronary artery disease (CAD) is less than 70 mg/dL, though achieving this target is challenging and often requires high-intensity lipid-lowering therapy and improved medication adherence.
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Coronary artery disease (CAD) is a leading cause of morbidity and mortality worldwide, with elevated low-density lipoprotein cholesterol (LDL-C) being a significant risk factor. Effective management of LDL-C levels is crucial for both the primary and secondary prevention of CAD .
Current guidelines recommend different LDL-C targets based on the individual's cardiovascular risk profile. For high-risk patients, such as those with existing CAD, the National Cholesterol Education Program (NCEP) suggests an optional LDL-C goal of less than 70 mg/dL. For moderately high-risk individuals, the target is less than 100 mg/dL.
The European guidelines on dyslipidemia recommend even more stringent targets. For very high cardiovascular risk patients, including those in primary prevention, the LDL-C goal is set at less than 70 mg/dL. For high-risk patients, the target is less than 100 mg/dL.
Despite the established guidelines, real-world data indicate that achieving these LDL-C targets remains challenging. In a large cohort study in Italy, none of the very high-risk patients in primary prevention achieved LDL-C levels below 70 mg/dL, and only 8.9% of high-risk patients reached levels below 100 mg/dL. Similarly, in secondary prevention, only 5.8% of patients achieved LDL-C levels below 70 mg/dL.
Several factors influence the likelihood of achieving LDL-C targets. High adherence to statin therapy significantly improves the chances of reaching LDL-C goals. In a study involving CAD patients, 85.8% achieved LDL-C levels below 100 mg/dL, and 32.4% reached levels below 70 mg/dL, with adherence to statin therapy being a critical factor. Additionally, the use of combination therapies, such as statins with ezetimibe or PCSK9 inhibitors, has been shown to improve LDL-C goal attainment .
Patients with impaired renal function face additional challenges in achieving LDL-C targets. A study involving Chinese patients with CAD found that those with an estimated glomerular filtration rate (eGFR) below 60 ml/min/1.73 m² had significantly lower rates of LDL-C goal attainment compared to those with normal renal function. High-intensity lipid-lowering therapy (LLT) with PCSK9 inhibitors was recommended to improve outcomes in this population.
In patients presenting with acute coronary syndromes (ACS), baseline LDL-C levels are often lower than in stable CAD patients. However, achieving the stringent LDL-C targets recommended by guidelines still requires aggressive lipid-lowering strategies, including the use of high-dose statins and additional non-statin therapies.
Achieving LDL-C goals in patients with CAD is essential for reducing cardiovascular events and improving long-term outcomes. While guidelines provide clear targets, real-world data show that many patients fail to reach these goals. Factors such as adherence to statin therapy, the use of combination lipid-lowering treatments, and addressing specific challenges in special populations are crucial for improving LDL-C goal attainment. Continued efforts are needed to optimize lipid management strategies to meet these critical targets.
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