Atrioventricular nodal reentrant tachycardia; Corrected transposition of the great arteries; Non fluoroscopic mapping; Colombia Use of non-fluoroscopic mapping in recurrent atrioventricular nodal reentrant tachycardia in a patient with corrected transposition of the great arteriesAbstract The anatomy in congenital corrected transposition of the great arteries is complex and the conduction system may experience large degrees of variation.Invasive procedures should be done with the use of the highest possible technological sources to warrant success.We describe here, a patient with recurrent atrioventricular node reentry tachycardia where non-fluoroscopic navigation system helped in a complex ablation.