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Anaesthesia Critical Care & Pain Medicine
Sous presse. Epreuves corrigées par l'auteur. Disponible en ligne depuis le jeudi 7 mars 2019
Doi : 10.1016/j.accpm.2019.01.013
Effect of opioid-free anaesthesia on postoperative epidural ropivacaine requirement after thoracic surgery: A retrospective unmatched case-control study
 

Maeva Bello a, b, Sébastien Oger a, Sandrine Bedon-Carte c, Chloée Vielstadte a, Francesco Leo d, Cédrick Zaouter e, Alexandre Ouattara b, e,
a CH Périgueux, Department of Anaesthesia, 24000 Périgueux, France 
b Université Bordeaux, Inserm, UMR 1034, Biology of cardiovascular diseases, 33600 Pessac, France 
c CH Périgueux, Department of critical care medicine, 24000 Périgueux, France 
d CH Périgueux, Department of thoracic surgery, 24000 Périgueux, France 
e CHU Bordeaux, Department of Anaesthesia and critical care, Magellan medico-surgical center, 33000 Bordeaux, France 

Corresponding author at: Service d'Anesthesie-Réanimation GH Sud, centre médico-chirurgical Magellan, hôpital Haut-Lévêque, avenue Magellan, 33600 Pessac, France.Service d'Anesthesie Réanimation GH Sud, centre médico-chirurgical Magellan, hôpital Haut-Lévêqueavenue MagellanPessac33600France
Abstract
Introduction

Patients undergoing thoracic surgery are at risk of severe postoperative pain. Post-thoracotomy pain relief is usually provided with thoracic epidural analgesia (TEA). Intraoperative use of opioids may result in hyperalgesia and increase analgesics consumption. We investigated the effect of opioid-free anaesthesia (OFA) on epidural ropivacaine requirement after thoracotomy.

Methods

This retrospective study compared postoperative epidural ropivacaine requirement of patients undergoing open thoracotomy and receiving either opioid-based anaesthesia (OBA group) or a non-opioid regimen including clonidine, ketamine and lidocaine (OFA group). All patients received postoperative multimodal analgesia including both epidural analgesia and intravenous analgesics. The primary outcome was the cumulative first 48 postoperative hours epidural ropivacaine consumption. Secondary outcomes included postoperative pain scores, requirement for postoperative morphine titration, total opioid analgesics consumption within the first 48 postoperative hours, incidence of nausea and vomiting, intraoperative haemodynamic.

Results

From January 2015 to February 2018, 50 patients received an OBA and 25 received an OFA. The cumulative first 48 postoperative hours epidural ropivacaine consumption was significantly higher in the OBA-group (919 ± 311 mg versus 693 ± 270 mg, P  = 0.002). Numerical Rating Scale at 6 and 24 h were significantly lower in the OFA-group (1[0–2] versus 3 [1–5], P  = 0.0005 and 1[0–2] versus 3.5 [1–5], P  = 0.001). In post-anaesthesia care unit, the proportion of patients requiring morphine was significantly higher in the OBA-group (42% versus 4%, P  < 0.001). During anaesthesia, the OBA-group required more vasopressor support, while there were more hypertensive events in the OFA-group.

Conclusion

OFA might reduce ropivacaine consumption, early postoperative pain scores and requirement for morphine titration after thoracotomy.

The full text of this article is available in PDF format.

Keywords : Opioid-free anaesthesia, Postoperative pain, Analgesia, Opioids, Thoracic surgery, Epidural analgesia




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