2]-free gas expired from the large airway and tracheal tube dead space, Phase H represents a mixture of gas from both the large airway dead space and alveolar dead space and Phase III (or alveolar plateau) represents alveolar ventilation (13,14).
The NICO 2 measurement of anatomical and alveolar dead space is based on the Bohr equation (15) which states that the dead space ([V.
Along the second axis, increased alveolar dead space
, commonly due to acute lung injury, volume overload, obstructive lung disease, hypovolemia, excess PEEP or pulmonary arterial occlusion, impairs the lung's CO2-exchanging efficiency.
Q] ratio of [infinity], and are alveolar dead space
Among the ventilation-perfusion disturbances present increased alveolar dead space