The study will include 80 patients aged 18-65 years who will undergo elective arthroscopic meniscal surgery.
Patients with bleeding disorders, cardiac disease, liver and/or renal failure, arrhythmia and electrolyte imbalance, cerebrovascular disease, and those who do not wish to participate in the study will be excluded.
Patients will be randomly assigned to two groups of 40 using a sealed envelope method; Group 1 (spinal anaesthesia administered), Group 2 (lumbar/sciatic block administered).
After obtaining informed consent from the patients, they will be taken to the operating theatre and a venous access will be established with an 18 G peripheral venous cannula. Once on the operating table, patients will be monitored and an ECG will be performed, and blood will be drawn to measure WBC, lymphocyte, neutrophil, urea, creatinine, and CRP values. Group 1 patients will receive 2 mg midazolam, 50 mcg fentanyl and spinal anaesthesia. Group 2 patients will receive 2 mg midazolam, 50 mcg fentanyl and lumbar/sciatic block.
An ECG will be performed on both groups 5 minutes after anaesthesia. Intraoperative heart rate, saturation, and blood pressure monitoring will be performed for both groups. An ECG will be performed on all patients at the end of the case. At the 6th postoperative hour, an ECG will be performed on both groups, blood samples will be taken for WBC, lymphocyte, neutrophil, urea, creatinine, and CRP values, and the first analgesia duration will be recorded.The results obtained will be statistically evaluated, and the study will be concluded. Recruiting.