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    The Effect of Erector Spinae Plane Block on Laparoscopic Cholecystectomy Anesthesia: Analysis of Opioid Consumption, Sevoflurane Consumption, and Cost
    (MARY ANN LIEBERT, INC, 2020) Peker, Kevser; Akçaboy, Zeynep Nur; Aydin, Gülçin; Gencay, Işın; Şahin, Ahmet Tugrul; Koçak, Yahya Fatih; Peker, Seydi Ali
    Background: Erector spinae plane (ESP) block has been increasingly suggested for laparoscopic cholecystectomy (LC) as a part of multimodal analgesia in many studies. However, there is not any study that investigated the perioperative effects of ESP block on anesthetic agent consumption and cost of LC anesthesia. This is the first study that evaluates the effect of ESP block in terms of cost-effectiveness, intraoperative consumption of inhalation agents, and perioperative consumption of opioids. Materials and Methods: In this prospective observational study, 81 patients who underwent LC were included. Patients were divided into two groups: In Group ESP (n = 39) bilateral ultrasound-guided ESP block was performed in preoperative period and in Group non-ESP (n = 42) ESP block was not performed. After standard general anesthesia protocol, anesthesia was maintained with 2% sevoflurane in 50% air and 50% oxygen with controlled ventilation in both groups. All patients were monitored with electrocardiography, noninvasive blood pressure, pulse oximetry, end-tidal carbon dioxide, and bispectral index. The consumption of sevoflurane and opioids in the intraoperative and postoperative 24 hours was recorded. The costs of drugs were determined by multiplying total consumed amounts with unit prices. Results: The costs and the consumed amounts of remifentanyl, sevoflurane, and tramadol were significantly higher in non-ESP group in the perioperative period (respectively, P < .001, P = .01, and P < .001). Conclusions: ESP block for LC decreased the consumed amount and cost of inhaled agents and opioids in the perioperative period.