• Jiaolin Ning, Liwen Mo, Bin Yi, Jianteng Gu, Kaizhi Lu, Yaying Zhou, Xinan Lai, Hailin Zhao, and Daqing Ma.
• From the Department of Anesthesiology, Southwest Hospital, Third Military Medical University, Chongqing, China (J.N., B.Y., J.G., K.L., Y.Z.); Department of Nephrology, People's Liberation Army Chengdu Military Area Command General Hospital, Chengdu, Sichuan, China (L.M.); Department of Traumatic Surgery, State Key Laboratory of Trauma and Burns, Surgery Research Institute, Daping Hospital, Third Military Medical University, Chongqing, China (X.L.); and Anaesthetics, Pain Medicine and Intensive Care, Faculty of Medicine, Department of Surgery and Cancer, London, United Kingdom (H.Z., D.M.).
• Anesthesiology. 2016 Jun 1; 124 (6): 1360-71.

BackgroundSevere blast limb trauma (BLT) induces distant multiple-organ injuries. In the current study, the authors determined whether whole-body hypothermia (WH) and its optimal duration (if any) afford protection to the local limb damage and distant lung, liver, and kidney injuries after BLT in rats.MethodsRats with BLT, created by using chartaceous electricity detonators, were randomly treated with WH for 30 min, 60 min, 3 h, and 6 h (n = 12/group). Rectal temperature and arterial blood pressure were monitored throughout. Blood and lung, liver, and kidney tissue samples were harvested for measuring tumor necrosis factor-α, interleukin-6 and interleukin-10, myeloperoxidase activity, hydrogen sulfide, and biomarkers of oxidative stress at 6 h after BLT. The pathologic lung injury and the water content of the lungs, liver, and kidneys and blast limb tissue were assessed.ResultsUnlike WH for 30 min, WH for 60 min reduced lung water content, lung myeloperoxidase activity, and kidney myeloperoxidase activity by 10, 39, and 28% (all P < 0.05), respectively. WH for 3 h attenuated distant vital organs and local traumatic limb damage and reduced myeloperoxidase activity, hydrogen peroxide and malondialdehyde concentration, and tumor necrosis factor-α and interleukin-6 levels by up to 49% (all P < 0.01). Likewise, WH for 6 h also provided protection to such injured organs but increased blood loss from traumatic limb.ConclusionsResults of this study indicated that WH may provide protection for distant organs and local traumatic limb after blast trauma, which warrants further study.

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