Quality of lipid-lowering therapy in patients with ischaemic heart disease: a register-based study in 3477 patients

Area of Science:

• Cardiovascular medicine
• Public health
• Pharmacoeconomics

Background:

• Effective management of lipid-lowering treatment is crucial for patients with ischaemic heart disease (IHD).
• Assessing routine clinical practice for dyslipidemia in IHD patients across large geographic areas presents challenges.

Purpose of the Study:

• To develop and validate a method for evaluating routine lipid-lowering treatment practices in IHD patients.
• To assess the current implementation and effectiveness of lipid-lowering therapies in a large population with IHD.

Main Methods:

• A register-based study design was employed, linking national health registers.
• Information on IHD, cholesterol levels, and lipid-lowering medication prescriptions was accessed via personal registration numbers.
• Data sources included the electronic laboratory information system (LIS), Danish National Hospital Register (LPR), and Danish National Health Service prescription data.

Main Results:

• 3477 IHD patients under 75 years were identified; 43.7% had claimed lipid-lowering medication prescriptions.
• Overall, 42% of patients achieved the target total cholesterol level (<5 mmol/L) set by European guidelines.
• Among 1521 patients treated with lipid-lowering medications, 55% reached the cholesterol goal.

Conclusions:

• A register-based method enables effective evaluation and monitoring of dyslipidemia treatment in IHD patients across large areas.
• This methodology can assess guideline impact and physician feedback, highlighting areas for practice improvement.
• Findings indicate that lipid-lowering treatment is underutilized in IHD patients, with statin doses often lower than those in clinical trials.