• J Arthroplasty · Aug 2015

    Randomized Controlled Trial

    Influence of Dexmedetomidine on the Tourniquet Related Responses in Hypertension Patients Receiving Unilateral Knee Arthroplasty under General Anesthesia.

    • Yong-Hua Li, Yong-Qiang Wang, Yi-Jie Zhang, Dong-Yu Zheng, Liu Hu, and Mou-Li Tian.
    • Department of Anesthesiology, Changzheng Hospital, Second Military Medical University, Shanghai, China.
    • J Arthroplasty. 2015 Aug 1; 30 (8): 1359-63.

    AbstractThis study aimed to investigate the influence of dexmedetomidine (DEX) on the tourniquet related responses in hypertension patients receiving unilateral knee arthroplasty (UKA) under general anesthesia. Results showed that the incidence of tourniquet induced hypertension (TIH), hemodynamics, MAC and EtSEV in DEX group were significantly lower than those in control group, regardless of hypertension. However, significant differences in TIH, hemodynamics, minimum alveolar concentration (MAC) and end-tidal sevoflurane (EtSEV) were not observed between hypertension patients and non-hypertension patients in both control group and DEX group. Moreover, oxygen index (OI) and respiratory index (RI) remained unchanged after deflation and DEX failed to affect OI and RI within 30 min after deflation, regardless of hypertension. Taken together, DEX may significantly improve the hemodynamics, which is independent of pre-existing hypertension.Copyright © 2015 Elsevier Inc. All rights reserved.

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