Antioxidant effects of midazolam, isoflurane and desflurane during coronary artery by-pass grafting surgery


Öztürk E., But A., TOPRAK H. İ., Demirbilek S., Güleç M., ERSOY M. Ö.

Gogus-Kalp-Damar Anestezi ve Yogun Bakim Dernegi Dergisi, cilt.15, sa.4, ss.114-122, 2009 (Scopus) identifier

Özet

It has been suggested that the reactive oxygen species (ROS) have essential role in the pathogenesis of myocardial ischemia-reperfusion injury. ROS may cause cardiac problems such as myocardial stunning, tissue damage and reperfusion cardiac arrhythmias may occur during weaning from pump in coronary artery bypass grafting (CABG). The aim of this study was compare the effects of midazolam, isoflurane, and desflurarie on the oxidative stress and hemodynamic parameters during CABG. After standard anesthesia induction, ninety patients were randomly allocated to Group M (midazolam), Group 1 (isoflurane), Group D (desflurane). Blood samples were obtained from the retrograde cannula placed in the coronary sinus; just prior to connecting to the pump (T1) and 5 minute after the cross-clamp removal (T2). In group M, superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and adenosine deaminase (ADA) significantly increased, and nitric oxide (NO) and malondialdehyde (MDA) decreased at the T2 compared to the T1 (p<0.05). In Group 1, SOD and ADA increased at the T2 compared to the T1. While NO and MDA decreased, ADA increased in Group D at the T2 in comparison with the T1 (p<0.05). GSH-Px was significantly higher in Group M than Group 1 and D at the T2 (p<0.05). Although ADA was lower at the T2 in Group M than Group 1 and D, but there was only statistically significant difference between Group M and D (p<0.05). Midazolam had greater stimulating capacity on the endogenous antioxidant system and may caused less cellular damage than isoflurane and desjlurane due to its effects on the ADA.