Primary hyperparathyroidism and recurrent ventricular tachyarrhythmia in a patient with novel RyR2 variant but without structural heart disease.

It is important to consider calcium and parathyroid hormone levels in patients with recurrent VT/VF without any obvious cause of arrhythmia. In similar cases to gain rhythm control using isoprenaline and do comprehensive molecular-genetic. Diagnosis and surgery in case of parathyroid adenoma may be needed to obtain definite arrhythmia control.