A congenital anatomical disorder, in which an additional electrical conduction pathway connects the atrium with the ventricle. This additional pathway is known as Kent’s bundle.
Due to this bypass, electrical stimuli arising from the sinus may reach the ventricle sooner than by the normal pathway; this is responsible for the other name coined for the condition: pre-excitation syndrome.
This anatomic variation exposes the patient to rapid rhythm disorders known as supraventricular tachycardia and atrial fibrillation. However, in many instances people with this anomaly are symptomless and the diagnosis is made incidentally by a specific pattern identified on ECG .
If necessary, surgical intervention can be performed (by cauterization of the superfluous bundle).