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Gabapentin premedication: assessment of preoperative anxiolysis and postoperative patient satisfaction.

Author(s): Tirault M, Foucan L, Debaene B, Frasca D, Lebrun T, Bernard JC, Sandefo I, Van Elstraete AC

Affiliation(s): Department of Anesthesiology, Clinique Saint-Paul, 97 200 Fort-de-France, Martinique, France.

Publication date & source: 2010, Acta Anaesthesiol Belg., 61(4):203-9.

Publication type: Randomized Controlled Trial

BACKGROUND: Gabapentin reduces anxiety in psychiatric patients. In this prospective, randomized, double-blinded, placebo-controlled study, we investigated whether a single dose of gabapentin as a premedicant reduces preoperative anxiety, and improves patient satisfaction. MATERIALS AND METHODS: After Institutional Review Board approval and written consent, 210 patients were randomly allocated into 3 groups of oral premedication: placebo, hydroxyzine 75 mg, or gabapentin 1200 mg. Anxiety level was assessed 3 times, using a 100-mm visual analogue scale: before premedication, in the preoperative holding area, and just before induction of general anaesthesia. In the postoperative period, patients were asked about their satisfaction with their premedicant. Data were presented as mean +/- SD. VAS scores were analyzed by repeated-measures analysis of variance followed by a Bonferroni test as appropriate. The chi-square test was used to analyze categorical data. All p values less than 0.05 was considered statistically significant. RESULTS: Baseline anxiety was not statistically different among the 3 groups. Anxiety level in the gabapentin group was significantly lower in the holding area, and before induction of anaesthesia (20 mm +/- 21), than in the hydroxyzine group (33 mm +/- 26 ; p = 0.023) and in the placebo group (36 mm +/- 28; p = 0.004). Anxiety decreased significantly overtime only in the gabapentin group. The gabapentin and hydroxyzine groups had a higher proportion of "satisfied or extremely satisfied" patients (73% and 70% respectively) as compared to the placebo group (48%, p = 0.006). CONCLUSION: A single dose of gabapentin has proven to be an effective premedication to reduce preoperative anxiety.

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