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Minerva Anestesiologica 2018 April;84(4):437-46

DOI: 10.23736/S0375-9393.17.11915-2

Copyright © 2017 EDIZIONI MINERVA MEDICA

language: English

Effects of closed-loop intravenous anesthesia guided by Bispectral Index in adult patients on emergence delirium: a randomized controlled study

Antonella COTOIA 1 , Lucia MIRABELLA 1, Renata BECK 1, Pompeo MATRELLA 1, Valentina ASSENZO 2, 3, 4, Thierry CHAZOT 2, 3, Gilda CINNELLA 1, Ngai LIU 2, 3, 4, Michele DAMBROSIO 1

1 Department of Anesthesia and Intensive Care, Ospedali Riuniti University Hospital, Foggia, Italy; 2 Department of Anesthesia, Foch Hospital, Suresnes, France; 3 Versailles-Saint-Quentin-en-Yvelines University, Versailles, France; 4 Outcomes Research Consortium, Cleveland Clinic, Cleveland, OH, USA


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BACKGROUND: Emergence delirium (ED) is an acute change in cognition after general anesthesia (GA) occurring in operative room, recovery room or in postanesthesia care. The automated propofol-remifentanil titration by Bispectral Index (BIS) (AutoTIVA) avoids period of deep (BIS<40) anesthesia and could potentially decrease the ED. The aim of this study was to evaluate ED in surgical patients under AutoTIVA, manual titration of propofol-remifentanil (ManualTIVA) or volatile BIS-guided GA. Moreover, we aimed to evaluate age-related postoperative Mini-Mental State Examination (MMSE) changes.
METHODS: One hundred and thirty-two adult patients scheduled for elective urologic surgery were randomized in: AutoTIVA, desflurane (DES), sevoflurane (SEVO), ManualTIVA anesthesia. The MMSE was performed before GA and 15 minutes after tracheal extubation.
RESULTS: The percentage of BIS 40-60 was significantly higher in the AutoTIVA compared to DES, SEVO and ManualTIVA (87% vs. 78 %, 58%, 39%, respectively; P≤0.001). The percentage of BIS<40 was significantly lower in AutoTIVA than in the other groups (P<0.001). No difference in hemodynamics was found among groups. Postoperative MMSE scores were similar to baseline in the AutoTIVA (26 [24-28] vs. 26 [23-28]) while they markedly decreased in all other groups (P<0.001). Postoperative MMSE decreased at any age. None experienced awareness was recorded.
CONCLUSIONS: Our results suggest that patients treated with AutoTIVA performed better in the cognitive test compared to the other groups receiving manual target-controlled GA due to a higher adequate level of anesthesia measured by BIS. Cognitive tests should be performed to test ED in all patients undergoing GA.


KEY WORDS: Emergence delirium - Intravenous anesthesia - Consciousness monitors

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