Elevated plasma free fatty acids predict sudden cardiac death: a 6.85-year follow-up of 3315 patients after coronary...

Area of Science:

• Cardiology
• Biochemistry
• Preventive Medicine

Background:

• Sudden cardiac death (SCD) is a leading cause of cardiovascular mortality.
• Free fatty acids (FFAs) have known detrimental effects on the myocardium.

Purpose of the Study:

• To investigate whether fasting FFA levels predict SCD in patients referred for coronary angiography.
• To explore the association between FFAs and cardiovascular mortality.

Main Methods:

• Prospective cohort study of 3315 patients undergoing coronary angiography.
• Measurement of fasting FFAs at baseline.
• Follow-up for a median of 6.85 years to record SCD events.
• Cox proportional hazards modeling to assess risk factors.

Main Results:

• Elevated FFA levels were significantly associated with an increased risk of SCD.
• The adjusted hazard ratio for SCD in the highest FFA quartile was 1.76.
• High FFAs were also linked to higher all-cause and cardiovascular mortality.

Conclusions:

• Elevated plasma FFAs are an independent risk factor for future SCD in patients undergoing coronary angiography.
• Modulating myocardial fatty acid metabolism could be a potential therapeutic target.
• Further research is needed to determine if high FFAs are causal or consequential in SCD.