Abstract
Purpose
Tramadol in a dose of 1 mg·kg−1 iv is effective in the treatment of shivering after general anesthesia. The current study aimed to investigate (I) whether tramadol was equally effective for shivering under regional anesthesia in obstetric patients and (2) whether effective treatment could be achieved with lower doses.
Methods
In a randomised, double-blind study, 36 obstetric patients who shivered during Cesarean section under regional anesthesia and who requested anti-shivering treatment were allocated to one of three groups foriv treatment: Group T0.5 received tramadol 0.5 mg·kg−1 (n= 12), Group T0.25 tramadol 0.25 mg·kg−1 (n= 13) and Group NS normal saline 0.05 ml·kg−1 (n= 11). Treatment efficacy was evaluated subjectively by the parturient as no improvement, slight improvement, or marked improvement. The attending anesthesiologist who was blinded also independently noted the time elapsed from treatment to the time shivering subsided. Side effects such as nausea, vomiting or sedation and Apgar scores of the newborn were also noted.
Results
Eighty percent of parturients in Group T0.5 and 92% in Group T0.25 were judged by observers to have shivering controlled compared with 27% in Group NS (P < 0.001). The response rates of Group T0.5 and Group T0.25 were not different. There was no increased incidence of side effects in the treatment groups.
Conclusion
We conclude that tramadoliv was effective in the treatment of intraoperative shivering during regional anesthesia for Cesarean section. There was no demonstrable difference in response rate or incidence of side effects between the two doses of 0.5 mg·kg−1 and 0.25 mg·kg−1.
Résumé
Objectif
Le tramadol en dose de 1 mg·kg−1 iv est efficace pour le traitement des frissons après l’anesthésie générale. La présente étude veut analyser (I) si le tramadol est également efficace contre les frissons sous anesthésie obstétricale régionale et (2) si le traitement efficace peut se faire avec de plus faibles doses.
Méthode
Dans une étude randomisée et à double insu, 36 parturientes atteintes de frissons pendant la césarienne sous anesthésie régionale ont été réparties en trois groupes pour recevoir un traitement de tramadoliv: le Groupe T 0,5 en a reçu 0,5 mg·kg−1 (n = 12), le Groupe T0.25 en a reçu 0,25 mg·kg−1 (n = 13) et le Groupe SN a eu 0,05 ml·kg−1 de solution saline normale (n = 11). Lefficacité du traitement a été évaluée subjectivement par les parturientes: aucune amélioration, légère amélioration ou importante amélioration. De son côté, l’anesthésiologiste traitant, observateur impartial, a noté le temps écoulé entre le traitement et la fin des frissons. On a aussi enregistré les effets secondaires comme les nausées, les vomissements ou la sédation et les indices d’Apgar du nouveau-né.
Résultats
Quatre-vingt pour cent des parturientes du Groupe T0,5 et 92 % de celles du Groupe T0,25 ont bénéficié du traitement des frissons selon les observateurs, mais 27 % seulement des patientes du Groupe SN (P < 0,001). Le temps de réaction des groupes T0,5 et T0,25 n’étaient pas différents. Il n’y a pas eu d’incidence accrue d’effets secondaires dans les groupes traités.
Conclusion
Nous pouvons conclure que le tramadoliv a été efficace pour le traitement des frissons peropératoires pendant une césarienne sous anesthésie régionale. Il n’y a pas eu de différence démontrable de temps de réaction ou d’incidence d’effets secondaires selon les deux doses de 0,5 mg·kg−1 et de 0,25 mg·kg−1.
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Chan, A.M.H., Ng, K.F.J., Nung Tong, E.W. et al. Control of shivering under regional anesthesia in obstetric patients with tramadol. Can J Anesth 46, 253–258 (1999). https://doi.org/10.1007/BF03012605
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DOI: https://doi.org/10.1007/BF03012605
Keywords
- Morphine
- Bupivacaine
- Tramadol
- Regional Anesthesia
- Apgar Score