Background :The investigators wanted to see if dexamethasone, which is routinely used as an adjuvant tool by different anesthesiologists in the orthopedics operating room, can really start the effect of other local anesthetics early and prolong the duration of action during infraclavicular block, and giving less additional analgesics after surgery.

Aims:The investigators plan to determine whether this outcome of , dexamethasone which is routinely used as an adjuvant tool to prolong postoperative analgesia.

Methods :60 participants will be included in the study. It includes participants the age of 18, who do not have lung disease such as COPD (Chronic Obstructive Pulmonary Disease), who will undergo infraclavicular block, and who are mentally healthy with ASA I-III.After obtaining written consent from the premedication unit from the participants who were preoperatively evaluated, a vascular access will be opened in the non-operated arm and 0.09% NaCl will be started and 0.05 mg/kg midazolam will be given. All patients will be monitored. With nasal cannula, 3lt/min O2 will be started. 3lt/min O2 will be started with nasal cannula. Patients who underwent infraclavicular block by lateral sagittal method under USG(ultrasound) guidance by adding 2ml dexamethasone (8mg) 3cc 0.9% NaCl to local anesthetic containing 10 ml of bupivacaine (0.5%) and 5cc of prilocaine (2%) will be included in Group I. Patients who underwent infraclavicular block by lateral sagittal method by adding 10 ml of Bupivacaine (0.5%) and 5ml of prilocaine (2%) and 5 cc of 0.9% NaCl will be included in Group II.

ASA score of the patients, drugs used in surgery, name of surgery, age, weight, height, block time, surgery start and end time, pre-block vitals, post-block vitals, adverse effects, sensory and motor block scale, with 10-minute intervals after the block, after the operation. grades immediately after, 12 hours and 24 hours, VAS scoring at 12 and 24 hours after surgery, surgeon satisfaction will be recorded. In addition, morphine and other analgesic consumption will be checked in all patients in the first 24 hours after surgery.

Background : The investigators to see if dexamethasone, which is routinely used as an adjuvant tool by different anesthesiologists in the orthopedics operating room, can really start the effect of other local anesthetics early and prolong the duration of action during infraclavicular block, thus enabling the surgery to start early and giving less additional analgesics after surgery.

Aims:The investigators plan to determine whether this outcome of dexamethasone , which is routinely used as an adjuvant tool to prolong postoperative analgesia.

Methods :60 participants will be included in the study. It includes participants over the age of 18, who do not have lung disease such as COPD (Chronic Obstructive Pulmonary Disease), who will undergo infraclavicular block, and who are mentally healthy with ASA I-III.After obtaining written consent from the premedication unit from the participants were preoperatively evaluated, a vascular access will be opened in the non-operated arm and 0.09% NaCl will be started and 0.05 mg/kg midazolam will be given. All participants will be monitored. With nasal cannula, 3lt/min O2 will be started. 3lt/min O2 will be started with nasal cannula. Participants who underwent infraclavicular block lateral sagittal method under USG guidance by adding 2ml dexamethasone (8mg) 3cc 0.9% NaCl to local anesthetic containing 10 ml of bupivacaine (0.5%) and 5cc of prilocaine (2%) will be included in Group I. Participants underwent infraclavicular block by lateral sagittal method by adding 10 ml of Bupivacaine (0.5%) and 5ml of prilocaine (2%) and 5 cc of 0.9% NaCl will be included in Group II.

ASA score of the participants, drugs used in surgery, name of surgery, age, weight, height, block time, surgery start and end time, pre-block vitals, post-block vitals, adverse effects, sensory and motor block scale, with 10-minute intervals after the block, after the operation. grades immediately after, 12 hours and 24 hours, VAS (Visual Analogue Scale) scoring at 12 and 24 hours after surgery, surgeon satisfaction will be recorded.In addition, morphine and other analgesic consumption will be checked in all patients in the first 24 hours after surgery.

At the end of the study, statistical analysis will be made parametrically and non-parametrically through the SPSS 2021 program. Statistics consultancy will be taken when necessary.

Inclusion Criteria:

• ASA I-III patient group who will undergo upper extremity surgery will be included in the study.

Exclusion Criteria:

• Patients under the age of 18 who have lung diseases that will prevent blocking and who are not mentally healthy will not be included in the study.

60 patients will be included in the study. It includes patients over the age of 18, who do not have lung disease such as COPD, who will undergo infraclavicular block, and who are mentally healthy with ASA I-III.