[Are treatments with statins that are considered unsuitable really unsuitable?]

Area of Science:

• Cardiology
• Preventive Medicine
• Pharmacology

Background:

• Established guidelines recommend statins for primary prevention of ischemic heart disease based on severe hypercholesterolemia (LDL-C ≥ 240 mg/dL) or high coronary risk (≥ 10% at 10 years).
• Clinical practice suggests statin prescription often occurs outside these strict criteria, with a majority of patients not meeting established indications.

Purpose of the Study:

• To investigate the characteristics of patients prescribed statins for primary prevention of ischemic heart disease outside the standard recommended criteria.
• To assess the clinical justification for statin use in patients not meeting formal indications.

Main Methods:

• Retrospective analysis of patient data from the Catalonian Institute of Health.
• Evaluation of patient characteristics and clinical factors influencing statin prescription for primary prevention.
• Assessment of coronary risk factors and calculated 10-year risk.

Main Results:

• Approximately 40% of patients receiving statins for primary prevention did not meet the standard criteria but exhibited clinical characteristics that could justify treatment.
• In about 33% of cases, the suitability of statin treatment could not be determined due to the inability to calculate the 10-year coronary risk.

Conclusions:

• Statin prescription for primary prevention in routine clinical practice frequently deviates from established guidelines.
• A significant proportion of patients treated off-label may have valid clinical reasons, highlighting the need for nuanced risk assessment.
• Incomplete coronary risk assessment limits the evaluation of treatment appropriateness in a substantial number of patients.