Background:

The correct management of lipid-lowering treatment is one of the key factors for the reduction of cardiovascular risk in secondary prevention patients. High-dose statins, ezetimibe, and more recently PCSK9 inhibitors (PCSK9i) are the main tools available to meet LDL cholesterol (LDL-C) therapeutic goals in these patients. Despite the overwhelming evidence in their favor, these therapies are greatly underutilized worldwide, with low levels of adherence and therapeutic inertia. In Argentina, there is scarce evidence on the quality of lipid-lowering treatment and the rate of patients in secondary prevention with a controlled lipid profile according to national and international guidelines.

Methods:

A prospective, multicenter, cross-sectional study including consecutive patients in secondary prevention for cardiovascular events from hospitals of Argentina with a Medical Residency system affiliated to CONAREC, was carried out from March to August 2020. Data was collected on the lipid-lowering treatment received, the reasons behind the non-use of statins in adequate doses and the lipid profile levels in case of having a record from the last 6 months prior to inclusion.

Results:

Among 1000 consecutive patients included from 24 centers corresponding to 11 provinces, 85.9% was treated with statins, 4.8% with ezetimibe, 2.4% with fibrates, and 13% was without treatment. In the case of patients treated with statin therapy, 67% was receiving high-dose statins (58% of the total number of patients). A total of 509 patients presented LDL-C assessment within the last 6 months. Mean LDL-C was 94 (90.6-97.8) mg/dl, HDL cholesterol 41 (40.7-42.6) mg/dl, and triglycerides 151 (142.9-159.8) mg/dl. In 30% of cases, LDL-C was below the cut-off value of 70 mg/dl and in 16% below 55 mg/ dl. In 37% of patients, LDL-C was >100 mg/dl.

Conclusions:

In this multicenter secondary prevention study performed in Argentina, just over half of the patients presented high-dose statin treatment, with scarce use of ezetimibe. Undertreatment was reflected in LDL-C values, with more than two-thirds of patients outside the therapeutic range, and therefore far from clinical guideline recommendations.