You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is When VA/Q is infinity, it means and explain in detail?
-Ventilation / perfusion ratio - normal = 4l/min/5l/min=0.8 - AV/Q= INFINITY - Means Perfusion (Q) to lungs is zero that is blood supply to that area is hindered making it awasted ventilationin those alveoli. - This may be due to pulmonary embolism causing |ed Physiological DEAD space . DEAD SPACE- Some of the air a person breathes never reaches the gas exchange areas but simply fills respiratory passages where gas exchange does not occur, - called so as its not useful for gas exchange. Physiologial / total dead space = anatomical dead space +alveolar dead space (non perfused/ non functioning Alveoli) In Atelectasisventilation: perfusion ratio (VA/Q) iszero. it is is the most common cause of a physiologic shunt.