Arrhythmias in paediatric valvar disease

Area of Science:

• Cardiology
• Cardiac Electrophysiology

Background:

• Valvar heart disease presents with hemodynamic derangements like pressure or volume overload.
• These abnormalities increase myocardial wall stress, leading to fibrosis and scarring.
• Myocardial scarring serves as a substrate for developing cardiac arrhythmias.

Purpose of the Study:

• To emphasize the link between valvar heart disease and arrhythmia development.
• To highlight the increased risk of morbidity and mortality due to arrhythmias in valvar disease patients.
• To advocate for proactive arrhythmia surveillance in individuals with high-risk valvar lesions.

Main Methods:

• Review of hemodynamic principles in valvar heart disease.
• Pathophysiological analysis of myocardial remodeling secondary to valvar lesions.
• Clinical correlation of arrhythmias with outcomes in congenital and acquired valvar disease.

Main Results:

• Valvar stenosis causes pressure overload; regurgitation causes volume overload.
• Both stenosis and regurgitation contribute to myocardial fibrosis and scarring.
• Arrhythmias are a common complication, increasing sudden death risk, especially in adults with congenital heart disease.

Conclusions:

• Arrhythmias significantly increase morbidity and mortality in valvar heart disease.
• Valvar stenosis and insufficiency are contributing factors to arrhythmia development.
• Routine arrhythmia surveillance is recommended for high-risk valvar lesions.