Relationship between concentration of exhaled pentane and degree of lung injury in non-heart-beating rabbits
10.3760/cma.j.issn.0254-1416.2012.07.023
- VernacularTitle:呼出气戊烷浓度与心脏停搏兔肺损伤程度的关系
- Author:
Yuting WEI
;
Huacheng ZHOU
;
Jingchun XING
;
Zhijie FU
;
Jinfeng LIU
;
Wenzhi LI
- Publication Type:Journal Article
- Keywords:
Heart arrest;
Pentanes;
Respiratory distress syndrome,adult
- From:
Chinese Journal of Anesthesiology
2012;32(7):857-859
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the relationship between the concentration of pentane in the exhaled air and degree of the lung injury in non-heart-beating (NHB) rabbits.Methods Twenty-four healthy male Japanese white rabbits weighing 2.4-3.0 kg were randomly divided into 4 groups ( n =6 each):A,B,C and D groups.The NHB model was established by exsanguination through the femoral artery.The exhaled gases were collected and lung tissues were removed at 0,30,60 and 120 min after cardiac arrest in A,B,C and D groups respectively.The concentration of pentane in the exhaled gases was detected immediately using the gas chromatography-mass spectrography.The wet to dry (W/D) lung weight ratio and content of malondialdehyde (MDA) in lung tissues were measured.The lung injury score (LIS) was recorded.The maximal volume ( Vmax ) of the lung was recorded when the airway pressure reached 30 cm H2O.Results Compared with groups A and B,the exhaled pentane concentration was significantly increased in group C,and the W/D ratio,content of MDA and LIS were significantly increased,while Vmax was significantly decreased in group D ( P ＜ 0.05).Compared with group C,W/D ratio and LIS were significantly increased in group D ( P ＜ 0.05 ).Conclusion The concentration of exhaled pentane can not reflect the degree of the lung injury in NHB rabbits.
