Tissue Oxygenation
Conditions
Brief summary
The aim of this study is to measure the effects of sympathetic blockade caused by peripheral nerve blocks performed with the axillary, infraclavicular and interscalene approach on tissue oxygenation with Near Infrared Spectroscopy (NIRS), to evaluate and compare the radial artery flow velocity and diameter in the blocked extremity, and to investigate whether there is a relationship with the quality of the sensory and motor block.
Detailed description
It has been reported that vasodilation after peripheral nerve blocks increases tissue oxygenation and increases arterial circulation on the ipsilateral side . Near Infrared Spectroscopy (NIRS), a noninvasive measurement method of tissue oxygen level, is used to measure regional hemoglobin oxygen saturation of arterial, venous and capillary blood . Many studies have compared the effects of upper extremity peripheral nerve blocks on the onset, quality, extent, and postoperative pain of sensory and motor block through axillary, infraclavicular, supraclavicular and interscalene approaches. The aim of this study is to measure the effects of sympathetic blockade caused by peripheral nerve blocks performed with the axillary, infraclavicular and interscalene approach on tissue oxygenation with Near Infrared Spectroscopy (NIRS), to evaluate and compare the radial artery flow velocity and diameter in the blocked extremity, and to investigate whether there is a relationship with the quality of the sensory and motor block.
Interventions
After the brachial plexus block, the regional oxygen saturation (rSO2) was monitored for 30 minutes with the Regional Oximetry System (O3™, Masimo, Irvine, CA) and the radial artery diameter with ultrasound in the same period.
Sponsors
Gazi University
Study design
Observational model
CASE_ONLY
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes
Inclusion criteria
* ASA I-III patients * Patients between the ages of 18 and 65 * Patients who applied axillary block * Patients who applied infraclavicular block * Patients who applied interscalene block
Exclusion criteria
* Peripheral nerve disease a history * History of thrombosis in the extremity to be blocked * History of embolism in the extremity to be blocked * Presence of neuropathy
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| tissue oxygenation | 30 minutes | Measured from both extremities by Near Infrared Spectroscopy for 30 min after brachial nerve block. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Radial artery diameter | 30 minutes | measured on the side of the block after brachial nerve block |
Countries
Turkey (Türkiye)
Outcome results
None listed