Bidirectional Glenn is a surgical treatment used for children who do not have two pumping chambers of the heart. This can be caused by many different diagnoses which all result in a single ventricle. These conditions include:
The bidirectional Glenn procedure directs the blood flow from the upper body veins directly to the lungs rather than the heart pumping the blood to the lungs first. The bidirectional Glenn shunt redirects blood flow from the upper body veins and is often performed prior to having a Fontan procedure. The Fontan procedure completes the change in path by directing the blood flow from the lower body veins to the lungs. Learn more about the Fontan procedure.
Normal heart – in a healthy heart with proper blood flow, the blue droplets representing oxygen-poor blood travel to the lungs, and the red oxygen-rich droplets circulate through the body.
Bidirectional Glenn – the surgeon sews the superior vena cava directly to the pulmonary artery to direct the blood flow from the head and neck vessels directly into the lungs.