In this study, the effect of paresthesia occurring during the interscalene block procedure on the incidence of postoperative neurological symptoms will be investigated. Paresthesia is defined as an abnormal sensation described as "tingling, pinprick, severe pain, or an electric feeling in the arm." The status of postoperative neurological symptoms in patients at the end of the block's effective duration will be assessed through phone interviews, evaluating symptoms such as arm numbness, tingling, abnormal sensations, pain, and weakness.
Who can participate
Age range18 Years – 65 Years
SexALL
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Inclusion Criteria:
* ASA physical status I to II
* Age range of 18-65 years
* Patients planned for interscalene nerve block for analgesia prior to arthroscopic shoulder surgery in the beach chair position under general anesthesia
Exclusion Criteria:
* body mass index \>35 kg/m²)
* history of drug use
* Patient's refusal to participate in the study
* Psychiatric disorders
* Central nervous system diseases
* Vestibular disorders
* Presence of diabetes, neuropathy, and paralysis
* Pregnancy
* Open shoulder surgery
* Allergy to local anesthetics
* Coagulopathy
* Severe thrombocytopenia
* Infection at the puncture site
* Pre-existing neuropathy in the limb to be operated on
* Use of opioid and antiemetic medications before surgery
* Use of dexamethasone
* Lung disease
* Low baseline oxygen saturation
* Patients who cannot cooperate in the postoperative period (e.g., mental retardation, delirium, language acquisition deficiency, etc.)