Arterio-venous Fistula Clinical Trial
Official title:
Near-infrared Spectroscopy to Assess Changes in Tissue Oxygenation Following Supraclavicular Plexus Block in Patients Undergoing Vascular Surgery
Peripheral regional anesthesia induces a sympathectomy-like effect with neurovascular changes
causing increased arterial blood flow and venodilatation .
Near-infrared spectroscopy (NIRS) can be applied to different kinds of tissue providing
oxygen saturation by detecting the absorption and reflection of near-infrared light .
The effect on peripheral tissue oxygenation in patients undergoing arteriovenous fistula
revision has not yet been examined. We postulate an increase in tissue oxygenation by
sympathicolysis caused by peripheral regional anesthesia that might be the reason for
beneficial outcome. The aim of our study was to demonstrate the effect of a supraclavicular
plexus block in this group of patients.
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