• Turk J Med Sci · Feb 2020

    Can postoperative pain be predicted? New parameter: analgesia nociception index

    • Ali Şefik Köprülü, Ali Haspolat, Yaşar Gökhan Gül, and Nurşen Tanrikulu.
    • Department of Anesthesiology and Intensive Care, Faculty of Medicine, İstanbul Yeni Yüzyıl University, İstanbul, Turkey
    • Turk J Med Sci. 2020 Feb 13; 50 (1).

    Background/AimThe Analgesia Nociception Index (ANI) is a new method of identifying nociception-analgesia balance. In this study, we investigate the correlation between the ANI and numeric rating scale (NRS) values immediately before and after extubation. The NRS values were recorded in the postanesthesia care unit, in a group of patients who underwent laparoscopic cholecystectomy, with the aim of evaluating the potential use of ANI values in the prediction of postoperative pain levels.Materials And MethodsThe ANI and NRS values, heartbeat rate (HR), systolic and diastolic arterial pressure (SAP/DAP), and oxygen saturation (SpO2) values of the patients were recorded into three groups based on the initial NRS values recorded in the postanesthesia care unit (group I: NRS ≤ 3, group II: NRS 4–6, group III: NRS ≥ 7). Patients whose ANI values were lower than 47, considered as the pain threshold, and the groups to which these patients belonged were also recorded.ResultsStatistically significant increases were noted in HR, SAP, and DAP after extubation, while there was no significant change in ANI values. A weak correlation was identified between the ANI and NRS values of all patient groups.ConclusionWe failed to identify a correlation between ANI and NRS values before and after extubation. Previous studies suggested that the ANI provides more valuable information in anesthetized patients, whereas our findings show that it is ineffective in the prediction of potential postoperative pain.This work is licensed under a Creative Commons Attribution 4.0 International License.

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