WPW Induced Ventricular Tachycardia in a Patient Using Quetiapine

Ventricular tachycardia (VT) is a mortal rhythm that can occur for many reasons. Wolff Parkinson White (WPW) syndrome can cause VT. Although there are usually signs and symptoms specific to underlying diseases, sometimes it may not be possible to make a differential diagnosis. A 32-year-old male presented to the emergency department with complaints of sudden onset of palpitations and weakness. He was using quetiapine in history. His hemodynamic were stable and his rhythm on the electrocardiogram (ECG) was evaluated as VT. Medical cardioversion was started with amiodarone. Electrical cardioversion was performed after the development of nausea, dizziness, and chest pain symptoms, and a return to normal sinus rhythm was achieved. There were no typical findings in the control ECG showing WPW syndrome or the effect of Quetiapine. The diagnosis of WPW was confirmed by an electrophysiological study (EPS), and successful treatment was performed by catheter ablation. Early electrical cardioversion may be considered when there is no response to medical cardioversion in the acute treatment of VT. Earlier application of specific treatment procedures such as EPS may be considered for differential diagnosis and curative treatment.