Fig. 3From: Isolated right ventricular Takotsubo cardiomyopathy in Guillain–Barré syndromeA Schematic illustration of the relationship between normal electrical axis, ECG leads, and heart ventricles. B V1–V3 leads, and even V4 leads, are closer to the right ventricle, when the right ventricle is enlarged. Therefore, the ST segment elevation in leads V1–V3 is indicative of right ventricular diseaseBack to article page