This study aims to investigate whether preoperative NLR (Neutrophil-to-Lymphocyte Ratio) serves as a biomarker for PONV (Postoperative Nausea and Vomiting). It also examines the impact of erector spinae plane block on NLR and PONV. Furthermore, the research explores the effect of erector spinae plane block on postoperative pain relief in spinal surgery and its influence on the usage of opioid medications.
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Record nausea and vomiting within the PACU and during the first 24 hours and second 24 hours after surgery.
Timeframe: Within the first 24 hours and the second 24 hours after surgery.
Record the need for antiemetic medication within the PACU and during the first 24 hours and the second 24 hours postoperatively.
Timeframe: Within the first 24 hours and the second 24 hours after surgery.
Record the neutrophil count and lymphocyte count on the first day after surgery and calculate the neutrophil-to-lymphocyte ratio (NLR)
Timeframe: Within the first 24 hours.