America Out Loud PULSE with Dr. Vaughn & Dr. Tankersley – Normally, 72% of the blood is in the venous system, but if integrity of veins is compromised (especially the iliac veins in the pelvis) then there can be up to 85% of the blood pooling before it gets to the heart, lungs and brain. This can have many adverse effects in many ways, not the least of which is a reduced blood return to the right heart and lungs...