Anesthesia depth affects the proliferation of lymphocytes to NK-cells and memory T-cells effect and the phagocytosis activity of macrophages in healthy patients. ASA 1-3 subjects undergoing extended shoulder surgery under continuous regional anesthesia randomly were assigned to a deep or a shallow anesthesia level (BIS \<35 or \>55) for more than an hour. Immune response is measured by lymphocyte proliferation as well as neutrophil and monocyte phagocytosis activity.
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Depression of lymphocyte proliferation by CD expression pattern in SASPA-Test as given in a percentage from before anesthesia
Timeframe: 70-90 min