• Rev Esp Anestesiol Reanim · Nov 2007

    Randomized Controlled Trial Comparative Study

    [Cellular immune response to 3 anesthetic techniques for simple abdominal hysterectomy].

    • J Longás Valién, A Navarro Hernando, A Hojas Gascón, R Casans Francés, and J Cuartero Lobera.
    • Servicio de Anestesiología, Reanimación y Terapia del Dolor, Hospital Clínico Universitario Lozano Blesa, Zaragoza. jalonva@terra.es
    • Rev Esp Anestesiol Reanim. 2007 Nov 1;54(9):523-8.

    Background And ObjectiveThe effect of surgery and anesthesia on the immune response may have a significant effect on perioperative tumor surveillance. The aim of this study was to characterize the cellular immune response of patients undergoing simple abdominal hysterectomy under 3 types of anesthesia.Patients And MethodsASA 1-2 patients undergoing simple abdominal hysterectomy were enrolled prospectively after they gave informed consent; the patients were randomized to 3 groups of 20 each to receive balanced anesthesia (group A), remifentanil-based anesthesia and analgesia (group B), or combined general-epidural anesthesia (group C). Postoperative analgesia was provided in accordance with group assignment. Four and 24 hours after surgery, 20 mL of blood was drawn from each patient for analysis of leukocyte populations and lymphocyte subpopulations. Statistics were calculated with the SPSS software package, version 12.0.ResultsAll groups had elevated neutrophil counts after surgery; the lowest levels were in group C (P<.05). Patients in all 3 groups developed lymphopenia, which was still evident 24 hours after surgery (P<.05). CD3 cell counts at 4 hours were lowest in patients who had received combined anesthesia (group C), CD19 cell counts were highest in group A, and CD16 cell counts were lowest in group C; this last difference was maintained at 24 hours (P<.05 for all these comparisons).ConclusionCombined general-epidural anesthesia seems to lower the counts of natural killer cells that are involved in tumor surveillance and destruction.

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