Evolving focus on diastolic dysfunction in patients with coronary artery disease

Area of Science:

• Cardiology
• Cardiovascular Physiology

Background:

• Coronary artery disease (CAD) is a prevalent condition.
• Diastolic dysfunction, characterized by impaired ventricular relaxation and filling, is increasingly recognized in cardiovascular disease.
• Heart failure with preserved ejection fraction (HFpEF) often coexists with CAD.

Purpose of the Study:

• To review recent studies on the relationship between coronary artery disease (CAD) and diastolic dysfunction.
• To explore the diagnostic and prognostic implications of diastolic dysfunction in CAD management.
• To highlight the contribution of CAD to heart failure with preserved ejection fraction (HFpEF).

Main Methods:

• Literature review of recent studies focusing on CAD and diastolic dysfunction.
• Analysis of noninvasive methods for recognizing diastolic dysfunction.
• Examination of the prognostic significance of diastolic dysfunction in acute coronary syndromes and chronic CAD.

Main Results:

• Myocardial ischemia, a hallmark of CAD, directly leads to diastolic dysfunction by slowing ventricular relaxation and impairing distensibility.
• Abnormal left ventricular (LV) filling dynamics, indicative of diastolic dysfunction, can be detected noninvasively during stress testing, potentially improving CAD recognition.
• Noninvasive identification of diastolic dysfunction is associated with a poor prognosis in patients with acute coronary syndrome and chronic CAD.
• CAD is a common and significant comorbidity in patients with HFpEF, contributing to their heart failure.

Conclusions:

• Myocardial ischemia is a direct cause of diastolic dysfunction.
• Assessing diastolic dysfunction provides valuable diagnostic and prognostic information for managing CAD.
• CAD is a frequent and critical comorbidity in HFpEF, underscoring the need for integrated management strategies.