RecruitingNot ApplicableNCT07398352

Comparison Of The Effects Of Regional Anesthesia On Brain And Carotid Artery Oxygenation In Shoulder Surgery

Comparison Of The Effect Of Interscalene Block Alone And The Combination Of Interscalene Block And Superficial Cervical Block On Brain Oxygenation And Carotid Artery Diameter In Shoulder Surgery

Sponsor

Sanliurfa Mehmet Akif Inan Education and Research Hospital

Enrollment

70 participants

Start Date

Feb 23, 2026

Study Type

INTERVENTIONAL

Conditions

Cerebral Perfusion Interscalene Block Superficial Cervical Block Shoulder Surgeries

Summary

The aim of our study was to compare the effects of interscalene block alone and the combination of interscalene block and superficial cervical block on cerebral oxygenation, carotid artery diameter, intraoperative hemodynamics, laboratory parameters, clinical course and postoperative pain in patients undergoing shoulder surgery.

Eligibility

Min Age: 18 YearsMax Age: 65 Years

Inclusion Criteria2

years patient
American Society of Anesthesiologists (ASA) I-II patient

Exclusion Criteria9

Age \< 18 years or \> 65 years
History of carotid endarterectomy
History of cerebrovascular accident(CVA)
Body Mass index (BMI)\>35 kg/m²
Inability to cooperate or comply with study procedures
Liver and kidney failure
Pregnancy and breastfeeding
ASA pyhsical status III-V
Contraindication to regional anesthesia

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Interventions

PROCEDUREInterscalene brachial plexus block

After sedating the patient with 2 mg midazolam, baseline values will be obtained, and an interscalene block will be performed under ultrasound guidance. Before the block, rSO2 values of both hemispheres of the brain and carotid artery diameter (at T1 and T5 times) will be measured and recorded using a NIRS probe at T2: 5 minute(min), T3: 10 min, T4: 15 min, and T5: 20 min. To assess the quality of the block, the sensory block will be evaluated at 20 minutes. The patient will be placed in a supine position, and after the first rSO2 value is obtained at T6, rSO2 values will be recorded at T7: 10 min, T8: 30 min, T9: 60 min, T10: surgical completion, and T11: 5 min postoperatively in the supine position. Bilateral carotid diameter(mm) will be measured at T6, T10, and T11. Before any postoperative analgesia is administered, the time of the patient's first pain and their need for analgesic will be recorded.

PROCEDUREInterscalene brachial plexus block and superficial cervical plexus block

After sedating the patient with 2 mg midazolam, baseline values will be obtained, and a combined interscalene and superficial cervical block will be performed under ultrasound guidance. Before the block, rSO2 values of both hemispheres of the brain and carotid artery diameter(mm) (at T1 and T5 times) will be measured and recorded using a NIRS probe at T2: 5 minute, T3: 10 minute, T4: 15 minute, and T5: 20 minute. To assess the quality of the block, the sensory block will be evaluated at 20 minutes. The patient will be placed in a supine position, and after the first rSO2 value is obtained at T6, rSO2 values will be recorded at T7: 10 minute, T8: 30 minute, T9: 60 minute, T10: surgical completion, and T11: 5 minute postoperatively in the supine position. Bilateral carotid diameter(mm) will be measured at T6, T10, and T11. Before any postoperative analgesia is administered, the time of the patient's first pain, and their need for analgesic will be recorded.