[Achieving optimal cholesterol levels in patients with chronic ischemic heart disease: from guidelines to the real world].

Background: It is known that less than half of patients with coronary heart disease reaches the target of LDL cholesterol (LDL-C) <100 mg/dl. According to the latest international guidelines, this target has been lowered to <70 mg/dl in very high-risk patients.

Methods: From November 1, 2009 to December 31, 2012, 4953 patients with coronary heart disease were enrolled in the Cardiovascular Registry of Trieste (Italy). We assessed clinical data, LDL-C levels, statin prescription and medium-term outcome in patients with coronary heart disease.

Results: At first clinical evaluation, LDL-C values were available for only 61.5% of patients. The target level of LDL-C <70 mg/dl was reached in 17% of cases and LDL-C <100 mg/dl in 53%. Patients with lower LDL-C levels were more frequently males, with higher cardiovascular risk profile, more comorbidity and more frequent polypharmacy. LDL-C levels influenced statin prescription: in patients with LDL-C ≥ 100 mg/dl, cardiologists started or modified the dosage of statin therapy twice more than in patients with LDL-C <100 mg/dl, even if only in less than 20% of cases. Patients with LDL-C <100 mg/dl in statin therapy had better prognosis, whereas patients with low LDL-C levels without statin therapy had the worst prognosis. Other prognostic factors in this population with LDL-C <100 mg/dl were age, presence of heart failure, comorbidities (evaluated with Charlson index) and polypharmacy.

Conclusions: In our population of outpatients with coronary heart disease, the target of LDL-C <100 mg/dl was reached in 53% of cases. LDL-C levels influenced statin prescription and modification of dosages. The medium-term outcome is closely influenced by the achievement of target LDL-C levels and statin prescription.