Left anterior accessory pathways are considered to be rare. The junction between the mitral and aortic valves consists of a continuous fibrous tissue. Nevertheless, muscular pathways connecting the left atrial and ventricular myocardium through the fibrous ring between these valves have been observed very rarely. Few reports about successful ablation of left anterior accessory pathways are available. We describe the case of a young patient with episodes of recurrent palpitations due to atrioventricular tachycardia through a manifest left anterior accessory pathway. Complete elimination of the accessory pathway was achieved by means of an ablative procedure via the transaortic retrograde approach.
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