Nan fang yi ke da xue xue bao = Journal of Southern Medical University
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Nan Fang Yi Ke Da Xue Xue Bao · Dec 2014
[Effect of mean arterial pressure on arterial to end-tidal CO₂partial pressure difference during one-lung ventilation].
To study the effect of different mean arterial pressures (MAP) on arterial to end-tidal CO₂partial pressure difference [(Pa-et)CO₂] and the intrapulmonary shunt (Qs/Qt) in patients undergoing thoracic surgery during one-lung ventilation (OLV). ⋯ PetCO₂reflects the dynamic changes of PaCO₂under normal blood pressure during OLV. In the hypotension period, when [(Pa-et)CO₂] increases and the correlation coefficient between PetCO₂and PaCO₂lowers, PetCO₂may not accurately reflect the changes of PaCO₂and blood gas analysis is warranted.