Effects of Brachial Plexus Block on Tissue Oxygenation

NCT ID: NCT05269251

Last Updated: 2024-03-01

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

99 participants

Study Classification

OBSERVATIONAL

Study Start Date

2021-04-12

Study Completion Date

2022-08-01

Brief Summary

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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

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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.

Conditions

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Tissue Oxygenation

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

PROSPECTIVE

Study Groups

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Axillary Brachial Plexus Block

Our study includes 3 groups, 33 patients each who underwent axillary, infraclavicular and interscalene blocks. In the study, which of the axillary, infraclavicular and interscalene blocks will be preferred, will be decided by an experienced anesthesiologist in accordance with the type of surgery to be performed. Demographic data, comorbidities, and smoking will be questioned in each group, arterial blood pressure, heart rate, body temperature, radial artery diameter and flow velocities will be recorded before peripheral nerve block is applied, and tissue oxygenation will be measured with Near Infrared Spectroscopy (NIRS) in the extremities with and without block. Tissue oxygenation, radial artery flow velocity and diameters, body temperature will be measured simultaneously at 0(basal)-5-10-15-20-25 and 30th minutes after the application of the block. test will be applied and the success of the procedure will be determined accordingly.

Near Infrared Spectroscopy (NIRS)

Intervention Type DEVICE

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.

Infraclavicular Brachial Plexus Block

Our study includes 3 groups, 33 patients each who underwent axillary, infraclavicular and interscalene blocks. In the study, which of the axillary, infraclavicular and interscalene blocks will be preferred, will be decided by an experienced anesthesiologist in accordance with the type of surgery to be performed. Demographic data, comorbidities, and smoking will be questioned in each group, arterial blood pressure, heart rate, body temperature, radial artery diameter and flow velocities will be recorded before peripheral nerve block is applied, and tissue oxygenation will be measured with Near Infrared Spectroscopy (NIRS) in the extremities with and without block. Tissue oxygenation, radial artery flow velocity and diameters, body temperature will be measured simultaneously at 0(basal)-5-10-15-20-25 and 30th minutes after the application of the block. test will be applied and the success of the procedure will be determined accordingly.

Near Infrared Spectroscopy (NIRS)

Intervention Type DEVICE

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.

Interscalene Brachial Plexus Block

Our study includes 3 groups, 33 patients each who underwent axillary, infraclavicular and interscalene blocks. In the study, which of the axillary, infraclavicular and interscalene blocks will be preferred, will be decided by an experienced anesthesiologist in accordance with the type of surgery to be performed. Demographic data, comorbidities, and smoking will be questioned in each group, arterial blood pressure, heart rate, body temperature, radial artery diameter and flow velocities will be recorded before peripheral nerve block is applied, and tissue oxygenation will be measured with Near Infrared Spectroscopy (NIRS) in the extremities with and without block. Tissue oxygenation, radial artery flow velocity and diameters, body temperature will be measured simultaneously at 0(basal)-5-10-15-20-25 and 30th minutes after the application of the block. test will be applied and the success of the procedure will be determined accordingly.

Near Infrared Spectroscopy (NIRS)

Intervention Type DEVICE

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.

Interventions

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Near Infrared Spectroscopy (NIRS)

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.

Intervention Type DEVICE

Other Intervention Names

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Regional Oximetry System (O3™, Masimo, Irvine, CA)

Eligibility Criteria

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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
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Gazi University

OTHER

Sponsor Role lead

Responsible Party

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Demet Coşkun

Associate Professor M.D

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Demet Coskun

Ankara, , Turkey (Türkiye)

Site Status

Countries

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Turkey (Türkiye)

Other Identifiers

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357

Identifier Type: -

Identifier Source: org_study_id

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