: belonging only to the person or group specified. 1  She has the sole authority to hire new staff members. [=only she can hire new staff members] 2  He has sole jurisdiction of the area.
Dr. Stern responded: Dead space in lung. Dead space is a term used to describe an area of the lung where gas exchange cannot occur - it does not mean dead lung tissue. Everyone has dead space and it is comprised mainly of your airways. It is measured as a percentage. Dead space is affected by many variables including the size of the breath we inhale.
2 the amount of lung in contact with ventilating gases but not in contact with pulmonary blood flow. Alveolar dead space is characterized by alveoli that are ventilated by the pulmonary circulation but are not perfused.The condition may exist when pulmonary circulation is obstructed, as by a thromboembolus.hysiologic dead space is an area in the respiratory system that includes the anatomic dead space together with the space in the alveoli occupied by air that does not contribute to the oxygen-carbon dioxide exchange.