Effects of self-made CPAP device on arterial oxygen pressure and intrapulmonary during one-lung ventilation
Abstract：Objective To investigate the effects of self-made CPAP device on arterial oxygen pressure and intrapulmonary during one-lung ventilation( OLV) .Methods 40 patients with ASA grade ⅠorⅡand a schedule for pulmonary lobectomy surgery and one-lung ventilation were randomly divided into 2 groups:CPAP group( group A, n=20) and matched group(Group B, n=20).In group A, CPAP in 5 cmH2O was administered to the non-ventilated lung by using the self-made device during OLV.Group B did not received any intervention during OLV.Arterial and mixed venous blood samples were taken for gas analysis before OLV ( T1 ) and at 30 min ( T2 ) , 60 min ( T3 ) after OLV.Intrapulmonary shunt( QS/QT ) was calculated.Results There was no significant difference in PO2 between the two groups at T1 ( P>0.05) .PaO2 in group A was higher than that in group B at T2 and T3 ( P<0.01) .Howev-er, there were no significant differences in QS/QT between the two groups at T1, T2 and T3(P>0.05).Conclusion Using the self-made device to add 5 cmH2 O CPAP can effectively improve arterial oxygenation during OLV, but does not affect the intrapulmonary shunt ( Qs/Qt) .
Keywords：One lung ventilation( OLV)Continuous positive airway pressure( CPAP)Intrapulmonary shuntArterial partial pressure of oxygen
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 285-288 )