NIRS Measurement After SCP Block
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|ClinicalTrials.gov Identifier: NCT03044496|
Recruitment Status : Completed
First Posted : February 7, 2017
Last Update Posted : April 12, 2018
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.
|Condition or disease||Intervention/treatment|
|Arterio-venous Fistula||Drug: Supraclavicular nerve block|
|Study Type :||Observational|
|Actual Enrollment :||15 participants|
|Official Title:||Near-infrared Spectroscopy to Assess Changes in Tissue Oxygenation Following Supraclavicular Plexus Block in Patients Undergoing Vascular Surgery|
|Actual Study Start Date :||September 2016|
|Actual Primary Completion Date :||September 2017|
|Actual Study Completion Date :||January 2018|
Supraclavicular Nerve Block
Patients undergoing vascular surgery for creation or revision of an arterio-venous fistula. Intervention: supraclavicular plexus block for anaesthesia. NIRS measurement before and after brachial plexus block.
Drug: Supraclavicular nerve block
Supraclavicular nerve block using ultrasound and 10ml ropivacaine 0.5% with 20ml mepivacaine 1%
- NIRS after block [ Time Frame: 5 minutes before block until 30 minutes after block ]Absolute change from baseline value in tissue oxygenation
- Difference between both arms [ Time Frame: 5 minutes before block until 30 minutes after block ]Absolute difference in tissue oxygenation between blocked arm and contralateral arm
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Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03044496
|Marienhospital Stuttgart, Dpt. of Anaesthesiology|
|Stuttgart, Baden Württemberg, Germany, 70199|