<prompt> Answer this question truthfullyWhat is the normal VQ ratio at the base of the lung and what does it indicate?  <response>: <reason> The normal VQ ratio at the base of the lung is 0.6, and it indicates wasted perfusion. The VQ ratio, or ventilation-perfusion ratio, is a measure of the efficiency of gas exchange in the lungs. A VQ ratio of 1.0 means that the amount of air reaching the alveoli ventilation is equal to the amount of blood flowing through the pulmonary capillaries perfusion. A VQ ratio less than 1.0 indicates wasted perfusion, which means that there is more blood flowing through the capillaries than there is air reaching the alveoli. At the base of the lung, the VQ ratio is normally 0.6, which means that there is more blood flowing through the capillaries than there is air reaching the alveoli, leading to wasted perfusion. 