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Regional Changes in Upper Limb Perfusion Following Brachial Plexus Block: A Pilot Study — RAFFAB  

Nerve Block Clinical Trial

Official title:
Regional Changes in Upper Limb Perfusion Following Brachial Plexus Block: A Pilot Study

Clinical Trial Summary

Ultrasound-guided regional anesthesia is increasingly being used in the modern surgical environment to provide specific intraoperative anesthesia and postoperative analgesia. Infiltration of local anesthesics around peripheral nerves firs blocks sympathetic, then sensory, then motor nerve function. Sympathectomy-induced vasodilation following brachial plexus block results in increased skin temperature and arterial flow within minutes.

Although it has not been shown to reliably increase diameter or cross-sectional area of distal arteries, brachial plexus block does change the pattern and quantity of blood flow to the hand. Given that the magnitude of change of flow cannot be attributed to vessel radius, the investigators suspect that the more laminar fluid dynamics are due to vascular tone.

The investigators study aims to quantify alterations in physiology and peripheral vasodilator response. The investigators anticipate that axially block will significantly improve regional blood flow.

Clinical Trial Description

n/a

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT02589054
Study type Observational
Source Lawson Health Research Institute
Contact
Status Completed
Phase N/A
Start date November 2015
Completion date March 2016
View Details
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