Analgesia Nociception Index (ANI) to predict intraoperative haemodynamic changes: Results of a pilot investigation

Thomas Ledowski, L. Averhoff, W.S. Tiong, C. Lee

    Research output: Contribution to journalArticle

    32 Citations (Scopus)

    Abstract

    Background The Analgesia Nociception Index has been described to reflect different levels of intraoperative nociceptive stimulation during total intravenous anaesthesia. The association between this index and haemodynamic changes during sevoflurane-based anaesthesia was investigated in 30 patients with the hypothesis that changes in the Analgesia Nociception Index may coincide with or even predict haemodynamic changes. Methods The Analgesia Nociception Index as well as blood pressure and heart rate were observed during induction, at skin incision, at times of an Analgesia Noceception Index decrease > 20% ('event') and pre-/post-fentanyl administration. Results The Analgesia Nociception Index decreased with airway manipulation [mean: 52 (before) vs. 33 (after); P <0.005] and after skin incision [mean: 63 (before) vs. 38 (after); P <0.001], and it increased after fentanyl administration [53 (before) vs. 59 (after); P <0.05]. However, its predictive probability to indicate heart rate and blood pressure increases of >10% was low (heart rate 0.61; blood pressure 0.59). Conclusions The Analgesia Nociception Index appears to reflect different levels of stimulation during sevoflurane-based general anaesthesia. However, it was of little predictive value to pre-empt significant haemodynamic changes. © 2013 The Acta Anaesthesiologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.
    Original languageEnglish
    Pages (from-to)74-79
    JournalACTA Anaesthesiologica Scandinavica
    Volume58
    Issue number1
    DOIs
    Publication statusPublished - 2014

      Fingerprint

    Cite this