BACKGROUND: Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a 
primary electrical myocardial disease characterized by exercise- and 
stress-related ventricular lachycardia manifested as syncope and sudden death 
usually in child and teenager and was rarely described in adults. The management 
includes betablockade, with the use of implantable cardioverter defibrillators 
if medical treatment is insufficient.
AIM: Report a new case of CPVT.
OBSERVATION: We report a case of a 43 years old patient in whom CPVT diagnosis 
was made during his exploration for palpitations occurring with the effort. 
Registration Holter ECG revealed several episodes of supraventricular 
tachycardia and episodes of nocturnal sino-atrial block. The patient had an ICD 
and betablockade treatment.
CONCLUSION: The TVPC in adult can manifest with attenuated symptoms that can be 
summarized with palpitations with the exertion. The supraventricular arrhythmias 
and sinus dysfunction may be at the forefront of Electrocardiographic 
manifestations. The prognosis of this form seems better than the TVPC of the 
child. Treatment with betablockade appears to be effective but existing 
dysfunction sinus facilitates decision to implant the ICD.