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Revista Brasileira de Anestesiologia

Print version ISSN 0034-7094On-line version ISSN 1806-907X

Abstract

SCHNAIDER, Taylor Brandão; VIEIRA, Antônio Mauro; BRANDAO, Antônio Carlos Aguiar  and  ROQUIM, Aretusa Chediak. Epidural S(+) ketamine and S(+) ketamine-morphine associated with ropivacaine in the postoperative analgesia and sedation of upper abdominal surgery. Rev. Bras. Anestesiol. [online]. 2007, vol.57, n.1, pp.8-18. ISSN 0034-7094.  http://dx.doi.org/10.1590/S0034-70942007000100002.

BACKGROUND AND OBJECTIVES: The association of drugs with different mechanisms of action in the dorsal horn of the spinal cord decreases postoperative pain, with a reduction in the incidence of side effects. The aim of this study was to evaluate postoperative analgesia and sedation by epidural S(+) ketamine and S(+) ketamine-morphine associated with ropivacaine in subcostal cholecystectomy. METHODS: Seventy patients of both genders, physical status ASA I and II, participated in this study. The following drugs were administered epidurally: 0.75% ropivacaine associated with 0.9% sodium chloride in the Control Group (CG); 0.75% ropivacaine associated with S(+) ketamine (0.5 mg.kg-1) in the Ketamine Group (KG); 0.75% ropivacaine associated with S(+) ketamine (0.5 mg.kg-1) and morphine (2 mg) in the Ketamine-Morphine Group2 (KMG2); 0.75% ropivacaine associated with S(+) ketamine (0.5 mg.kg-1) and morphine (3 mg) in the Ketamine-Morphine Group3 (KMG3). Analgesia and sedation were evaluated 2h, 6h, and 24h after the end of the surgery. RESULTS: Sedation was observed up to 2 hours after the end of the procedure in KG, KMG2, and KMG3. Analgesia was effective in CG up to 2 hours after the surgery, at 2h and 6h in KG, and at 2h, 6h, and 24h, in KMG2 and KMG3. CONCLUSIONS: S(+) ketamine and the associations S(+) ketamine-morphine promoted sedation up to 2h after the end of the surgical procedure. S(+) ketamine promoted analgesia especially at the moment of the 2h observation, and the associations of S(+) ketamine-morphine promoted analgesia especially at 2h and 6h after the surgery.

Keywords : ANALGESIA [postoperative]; ANALGESICS [morphine]; ANESTHETICS, Dissociate [S(+) Ketamine]; ANESTHETICS, Local [ropivacaine]; ANESTHETIC TECHNIQUES, Regional [epidural].

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