Dr Sarah Boynton –Paediatric Cardiology Registrar
Heart Unit –Birmingham Children’s Hospital
The heart is a powerful pump, which tries to satisfy the body’s need for oxygen at all times. It does so by making the filling chambers (atria), the valves and the pumping chambers (ventricles) work in perfect harmony. The key to achieving this is the heartbeat (electrical activity). In people with a single ventricle a normal heart beat and synchrony of all its components is even more important than in people with a normal heart.