Abstract
Trace elements may contribute to myocardial dysfunction and susceptibility of the phospholipid cell membrane to free-radical damage and oxidative changes. We studied the concentration of trace elements copper, zinc, and magnesium in cardiac surgery. Fifty-four consecutive patients for elective coronary artery bypass grafting (n = 30) and valve replacement (n = 24) were studied. Blood samples were collected every 30 min (T1–T5) during cardiopulmonary bypass and postoperatively (T6–T9). Plasma concentrations of copper, zinc, and magnesium were measured with flame atomic absorption spectrophotometry. The concentrations of copper, zinc, and magnesium were significantly different during and after cardiopulmonary bypass (p < 0.01). The zinc concentration at T7 and T8 (p < 0.01) and the copper concentration at T1, T9 (p < 0.05) were significantly different between two groups. However, the magnesium concentration had no significant differences between the two groups (p > 0.05). In patients undergoing valve replacement or coronary artery bypass grafting, the concentrations of copper and zinc decreased significantly during cardiopulmonary bypass. Our study suggests that the current cardiopulmonary bypass protocol is adequate in the maintenance of c magnesium. However, the low copper and zinc concentrations found in the present study may suggest that in the future, supplementation particularly of copper and zinc may become a necessary procedure in cardiac surgery with cardiopulmonary bypass.
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Acknowledgments
The work described in this paper was fully supported by grants from the National Natural Science Foundation of China (no. 81170148), International S & T Cooperation Program of China (no. 2009DFB30560), and the National Basic Research Program of China (no. 2010CB529500), and Tianjin Municipal Science and Technology Commission 09ZCZDSF04200 and 10JCYBJC26400, Tianjin Municipal Research Grant for Applied Basic and Frontier Technology, China, Binhai Key Platform for Creative Research Program (2012-BH110004), Tianjin Binhai New Area Health Bureau ((2011BHKZ001 and 2012BWKZ008) and (2011BHKY002 and 2012BWKY024)), and Hong Kong Research Grants Council Grants (GRF CUHK4789/09M & 4774/12M). The assistance of the surgical team and nurses in the Cardiac Operating Theater, TEDA International Cardiovascular Hospital is gratefully acknowledged.
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Yan, YQ., Liu, XC., Jing, WB. et al. Alteration of Plasma Trace Elements in Patients Undergoing Open Heart Surgery. Biol Trace Elem Res 151, 344–349 (2013). https://doi.org/10.1007/s12011-012-9577-4
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DOI: https://doi.org/10.1007/s12011-012-9577-4