Deadly proposal: a case of catecholaminergic polymorphic ventricular tachycardia

Area of Science:

• Cardiology
• Genetics
• Electrophysiology

Background:

• Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a rare, life-threatening genetic disorder affecting young individuals.
• It is characterized by adrenergically mediated ventricular arrhythmias in structurally normal hearts, often leading to syncope and sudden cardiac death.
• CPVT is a cardiac channelopathy linked to mutations in genes regulating intracellular calcium handling.

Observation:

• A 14-year-old male experienced cardiopulmonary arrest following an emotionally triggered CPVT episode.
• Diagnostic evaluations included electrocardiogram, exercise stress testing revealing inducible ventricular arrhythmias, and genetic testing confirming CPVT.
• The patient successfully recovered and received treatment with beta-blockers and an implantable cardioverter-defibrillator.

Findings:

• This case highlights the critical role of recognizing CPVT in pediatric patients presenting with unexplained syncope or cardiac arrest.
• Genetic testing is essential for confirming the diagnosis and understanding the underlying molecular basis.
• Comprehensive management involving pharmacotherapy and device implantation is vital for long-term outcomes.

Implications:

• This case underscores the importance of timely diagnosis and appropriate management of CPVT to prevent sudden cardiac death in youth.
• Genetic counseling and family screening are crucial for identifying at-risk relatives.
• Understanding CPVT's molecular mechanisms can guide the development of novel therapeutic strategies.