Clinical Trial: NIRS Measurement After SCP Block

Study Status: Recruiting
Recruit Status: Recruiting
Study Type: Observational

Official Title: Near-infrared Spectroscopy to Assess Changes in Tissue Oxygenation Following Supraclavicular Plexus Block in Patients Undergoing Vascular Surgery

Brief Summary:

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.


Detailed Summary:
Sponsor: Marienhospital Stuttgart

Current Primary Outcome: NIRS after block [ Time Frame: 5 minutes before block until 30 minutes after block ]

Absolute change from baseline value in tissue oxygenation


Original Primary Outcome: Same as current

Current Secondary Outcome: 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


Original Secondary Outcome: Same as current

Information By: Marienhospital Stuttgart

Dates:
Date Received: January 31, 2017
Date Started: September 2016
Date Completion: May 2017
Last Updated: February 7, 2017
Last Verified: February 2017