I47: Paroxysmal tachycardia

I47.0: Re-entry ventricular arrhythmia

The heart pumps blood through the body. Inside the heart are 4 chambers. There are 2 heart atria and 2 ventricles. Both heart atria and both ventricles are separated from each other by a partition. The heart's electrical activity causes the heart muscle to contract. It begins at a site in your right atrium. Initially the electrical activity spreads to both atria. The electrical activity then flows on via a sort of cable to the ventricles.

The heart’s electrical activity is not spreading normally in the ventricles of your heart. Your heart has an irregular beat as a result. It may then beat too quickly, too.