Biventricular pacing in children with complete atrioventricular block

Area of Science:

• Pediatric Cardiology
• Electrophysiology
• Cardiac Pacing

Background:

• Complete atrioventricular block (CAVB) in children presents significant challenges for cardiac function and requires effective pacing strategies.
• Biventricular pacing (BVP) aims to resynchronize ventricular contraction, potentially improving hemodynamic performance.

Observation:

• Three pediatric patients with CAVB underwent successful pacemaker implantation utilizing a standard dual-chamber device for BVP.
• Post-implantation, QRS durations were measured to assess electrical conduction and ventricular activation.
• Echocardiography was performed to evaluate the degree of left ventricular synchrony.

Findings:

• Post-operative QRS durations were reduced to 114, 112, and 106 milliseconds across the three patients.
• Echocardiographic assessments confirmed well-synchronized left ventricular function following BVP.
• The observed reduction in QRS duration suggests improved ventricular conduction.

Implications:

• Biventricular pacing may be a valuable therapeutic option for pediatric patients diagnosed with complete atrioventricular block.
• This approach shows promise in mitigating the adverse effects of AV dissociation and improving cardiac resynchronization.
• Further research into long-term outcomes and broader application in pediatric electrophysiology is warranted.