Coronary Flow Reserve, Inflammation, and Myocardial Strain: The CIRT-CFR Trial

Area of Science:

• Cardiovascular Medicine
• Inflammation Research
• Heart Failure Pathophysiology

Background:

• Inflammation is a critical factor in cardiovascular disease outcomes.
• The precise role of inflammation in the development of heart failure remains unclear.
• Understanding inflammation's impact on cardiac function is vital for patient care.

Purpose of the Study:

• To investigate the association between coronary flow reserve (CFR) and inflammation in patients with cardiometabolic disease.
• To determine if inflammation modifies the relationship between cardiac blood flow and myocardial strain.
• To explore the potential link between inflammation-mediated microvascular ischemia and heart failure.

Main Methods:

• Analysis of data from the prospective, multicenter Coronary Flow Reserve to Assess Cardiovascular Inflammation (CIRT-CFR) study, an ancillary study of the Cardiovascular Inflammation Reduction Trial (CIRT).
• Assessment of coronary flow reserve (CFR) in patients with cardiometabolic disease.
• Evaluation of inflammation markers and myocardial strain.
• Statistical analysis to identify independent associations and interactions.

Main Results:

• Impaired coronary flow reserve (CFR) was independently associated with increased inflammation and myocardial strain.
• These associations persisted despite well-controlled lipid, glycemic, and hemodynamic profiles.
• Inflammation was found to modify the relationship between CFR and myocardial strain, disrupting the link between cardiac blood flow and function.

Conclusions:

• In patients with cardiometabolic disease, impaired CFR is linked to heightened inflammation and myocardial strain.
• Inflammation appears to disrupt the normal relationship between cardiac blood flow and function.
• Further research is warranted to confirm if inflammation-driven microvascular ischemia, indicated by reduced CFR, predicts heart failure development.