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Evaluation of preoperative oral carbohydrate administration on insulin resistance in off-pump coronary artery bypass patients: A randomised trial

 Lee, Bora  ;  Soh, Sarah  ;  Shim, Jae-Kwang  ;  Kim, Ha Y.  ;  Lee, Hyelin  ;  Kwak, Young-Lan 
 European Journal of Anaesthesiology, Vol.34(11) : 740-747, 2017 
Journal Title
 European Journal of Anaesthesiology 
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BACKGROUND: In fasting cardiac surgery patients, preoperative carbohydrate (CHO) drink intake attenuated insulin resistance and improved cardiac metabolism, although its beneficial effects were not evident after cardiac surgery possibly due to cardiopulmonary bypass-related extreme systemic inflammation. OBJECTIVE: We aimed to evaluate whether preoperative CHO intake affected insulin resistance and free-fatty acid (FFA) concentrations in off-pump coronary revascularisation. DESIGN: A randomised controlled trial. SETTING: Primary care in a university hospital in Korea from January 2015 to July 2016. PATIENTS: Sixty patients who underwent elective multi-vessel off-pump coronary revascularisation were randomised into two groups. Three patients were excluded from analysis and 57 patients completed study. INTERVENTION: The CHO group received oral CHO (400 ml) the prior evening and 2 to 3 h before surgery, and the control group was fasted from food and water according to standard protocol. MAIN OUTCOME MEASURES: Insulin resistance was assessed twice, after anaesthetic induction and after surgery via short insulin tolerance test. FFA, C-reactive protein and creatine kinase-myocardial band concentrations were determined serially for 48 h after surgery. RESULTS: Insulin sensitivity was greater (P = 0.002) and plasma FFA concentrations were lower (P = 0.001) after anaesthetic induction in the CHO group compared with the Control group, although there were no intergroup differences after surgery. The postoperative peak creatine kinase-myocardial band concentration was significantly lower in the CHO group compared with the Control group [8.8 (5.4 to 18.2) vs. 6.4 (3.5 to 9.7) ng ml, P = 0.031]. CONCLUSION: A preoperative CHO supplement significantly reduced insulin resistance and FFA concentrations compared with fasting at the beginning of the surgery, but these benefits were lost after off-pump coronary revascularisation. Despite their transient nature, these beneficial effects resulted in less myocardial injury, mandating further studies focused on the impact of preoperative CHO on myocardial ischaemia and cardiac function after coronary revascularisation.
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1. College of Medicine (의과대학) > Dept. of Anesthesiology and Pain Medicine (마취통증의학교실) > 1. Journal Papers
Yonsei Authors
곽영란(Kwak, Young Lan) ORCID logo https://orcid.org/0000-0002-2984-9927
소사라(Soh, Sa Rah) ORCID logo https://orcid.org/0000-0001-5022-4617
심재광(Shim, Jae Kwang) ORCID logo https://orcid.org/0000-0001-9093-9692
이보라(Lee, Bo Ra) ORCID logo https://orcid.org/0000-0002-7699-967X
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