TY - JOUR AU - Gyulaházi, Judit AU - Varga, Katalin AU - Iglói, Endre AU - Redl, Pál AU - Kormos, János AU - Fülesdi, Béla TI - The effect of preoperative suggestions on perioperative dreams and dream recalls after administration of different general anesthetic combinations: a randomized trial in maxillofacial surgery JF - BMC ANESTHESIOLOGY J2 - BMC ANESTHESIOL VL - 15 PY - 2015 IS - 1 SN - 1471-2253 DO - 10.1186/1471-2253-15-11 UR - https://m2.mtmt.hu/api/publication/2831737 ID - 2831737 N1 - Published: 28 January 2015 Megjegyzés-25147308 Published: 28 January 2015 AB - Background Images evoked immediately before the induction of anesthesia with the help of suggestions may influence dreaming during anesthesia.The aim of the study was to assess the incidence of evoked dreams and dream recalls by employing suggestions before induction of anesthesia while administering different general anesthetic combinations. Methods This is a single center, prospective randomized including 270 adult patients scheduled for maxillofacial surgical interventions.Patients were assigned to control, suggestion and dreamfilm groups according to the psychological method used. According to the anesthetic protocol there were also three subgroups: etomidate & sevoflurane, propofol & sevoflurane, propofol & propofol groups. Primary outcome measure was the incidence of postoperative dreams in the non-intervention group and in the three groups receiving different psychological interventions. Secondary endpoint was to test the effect of perioperative suggestions and dreamfilm-formation training on the occurrance of dreams and recallable dreams in different general anesthesiological techniques. Results Dream incidence rates measured in the control group did not differ significantly (etomidate & sevoflurane: 40%, propofol & sevoflurane: 26%, propofol & propofol: 39%). A significant increase could be observed in the incidence rate of dreams between the control and suggestion groups in the propofol & sevoflurane (26%-52%) group (p = 0.023). There was a significant difference in the incidence of dreams between the control and dreamfilm subgroup in the propofol & sevoflurane (26% vs. 57%), and in the propofol & propofol group (39% vs.70%) (p = 0.010, and p = 0.009, respectively). Similar to this, there was a significant difference in dream incidence between the dreamfilm and the suggestion subgroups (44% vs. 70%) in the propofol & propofol group (p = 0.019). Propofol as an induction agent contributed most to dream formation and recalls (chi2-test p value: 0.005). The content of images and dreams evoked using suggestions showed great agreement using all three anesthetic protocols. Conclusion The psychological method influenced dreaming during anesthesia. The increase of the incidence rate of dreams was dependent on the anesthetic agent used, especially the induction agent. The study was registered in ClinicalTrials.gov. Identifier: NCT01839201. 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