Hypercholesterolemia diagnosis, treatment patterns and target achievement in patients with acute coronary syndromes in Germany

Background: Patients who experience an acute coronary syndrome (ACS) are at high risk of further cardiovascular events. Long-term treatment of cardiovascular risk factors, such as hyperlipidemia, is critical to prevent progression of coronary heart disease. However, many patients do not reach recommended target levels for low-density lipoprotein (LDL) cholesterol, despite receiving lipid-lowering therapy.

Objective: To obtain an insight into the current treatment situation for very high-risk patients after an initial ACS in Germany.

Methods: The multicenter HYDRA-ACS registry study was initiated to document the clinical characteristics of very high-risk patients with ACS and hyperlipidemia in clinical practice. In addition, lipid profiles, lipid-lowering therapy, and lipid target achievement during treatment were documented over 1 year.

Results: 353 patients who were documented had a mean age of 57.3 years, mean body mass index was 28.6 kg/m², and 73.4% were male; 52.4% had a family history of myocardial infarction (MI) and 32.6% a family history of coronary heart disease (CHD). Patients' medical histories commonly included CHD (32.9%), percutaneous coronary intervention (PCI; 25.5%), and previous ACS (23.0%). Common comorbidities included hypertension (68.6%), diabetes (17.3%), heart failure (16.7%), and stable angina pectoris (15.9%). The proportion of patients receiving lipid-lowering therapy increased from 65.7% at baseline to 100% at the 12-month follow-up (p < 0.0001). Substantial increases in use were seen for statins (85.0% vs. 36.5%, p = 0.0002) and cholesterol resorption inhibitors (32.9% vs. 8.6%, p = 0.0003). Use of combination therapy increased. The proportion of patients undertaking physical exercise increased (p < 0.0001), as did consumption of fruit and vegetables (p = 0.0222) and fish (p = 0.0162), while alcohol consumption decreased (p = 0.0019). Median LDL cholesterol level decreased significantly from baseline (87 vs. 166 mg/dL, p < 0.0001), and the proportion of patients with a level < 70 mg/dL increased (50.0% vs. 5.7%, p < 0.0001). Median HDL cholesterol increased (47 vs. 45 mg/dL, p = 0.0235) and median triglyceride level decreased (119 vs. 148 mg/dL, p = 0.0080). The proportion of patients receiving antihypertensive drugs and platelet aggregation inhibitors increased. The most frequent cardiovascular events during the 12-month follow-up were PCI (25.9%) and cardiac catheterization without PCI (12.9%); MI occurred in 2.4% of patients; no deaths were reported.

Conclusions: This study provides a contemporary picture of the treatment of hyperlipidemia after ACS in patients in Germany. Despite treatment with lipid-lowering therapy, many patients did not achieve recommended lipid targets by 12 months after an ACS event.