Atrial Function and Its Role in the Non-invasive Evaluation of Diastolic Function in Congenital Heart Disease

Area of Science:

• Cardiology
• Pediatric Cardiology
• Cardiac Physiology

Background:

• Diastolic dysfunction is linked to adverse outcomes in congenital heart disease (CHD).
• Non-invasive assessment of diastolic function in CHD patients presents significant challenges.
• Atrial size is crucial, but atrial function is emerging as a more sensitive indicator of ventricular diastolic dysfunction.

Purpose of the Study:

• To review the current understanding of diastolic function assessment in CHD.
• To explore the role of atrial form and function, including non-invasive assessment methods.
• To elucidate the current knowledge regarding atrial function in CHD.

Main Methods:

• Literature review focusing on diastolic function and atrial function in CHD.
• Analysis of non-invasive assessment techniques for atrial function.
• Synthesis of evidence on atrial function patterns in various CHD types.

Main Results:

• A common pathway of atrial dysfunction in CHD involves decreased reservoir and conduit function.
• This is followed by an initial compensatory increase and subsequent decompensatory decrease in atrial contractile function.
• Atrial function provides a more sensitive metric for ventricular diastolic dysfunction than atrial size alone.

Conclusions:

• Atrial function is a critical, yet often overlooked, parameter in evaluating diastolic dysfunction in CHD.
• Understanding atrial dysfunction patterns is key to improving patient outcomes.
• Further research into non-invasive assessment and therapeutic targeting of atrial function in CHD is warranted.