Ventricular preexcitation

What it means

An abnormality in which the cardiac ventricles depolarize too early as a result of an abnormality of cardiac conduction pathways such as an accessory pathway.

Pre-excitation syndromes are generally caused by accelerated conduction along an accessory pathway, but in some cases there is accelerated conduction through the normal AV node.

Rare diseases that can present with this1

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Pre-excitation syndrome · Preexcitation · Ventricular pre-excitation