[THE IMPORTANCE OF LEAD AVR IN THE EVALUATION OF AN ECG STRIP].

INTRODUCTION: Over the years, the aVR lead has been overlooked by clinicians while observing a normal 12-lead ECG (electrocardiogram). A positive P-QRS complex in the aVR lead should raise prompt suspicion for either a congenital heart malrotation or a lead misplacement. In this article we present a case of an asymptomatic patient and a pathological ECG strip displaying ST elevations and a positive QRS in the aVR lead. A follow-up ECG was performed in the emergency department, and revealed a normal sinus rhythm with no abnormalities indicating acute ischemia. Through this case, we demonstrated the importance of proper examination of the aVR lead and its role in preventing unnecessary treatments.