Comparison of the safety and effectiveness of dexmedetomidine with a combination of midazolam and fentanyl for sedation during awake fibreoptic nasotracheal intubation
Citation Information :
Sayeed T, Goneppanavar U. Comparison of the safety and effectiveness of dexmedetomidine with a combination of midazolam and fentanyl for sedation during awake fibreoptic nasotracheal intubation. Indian J Respir Care 2013; 2 (2):320-327.
Introduction: Several drugs have been used to enhance patient comfort during awake nasal fibreoptic intubation (AFOI) process. Most of these can cause dangerous airway or haemodynamic compromise. This study compared combination of midazolam and fentanyl against dexmedetomidine.
Methods: Thirty two adults undergoing AFOI were randomly allocated into group MF (1mg midazolam and 1 ìg/kg fentanyl) or group D (dexmedetomidine 1ìg/kg over 10 minutes). Following standard airway topicalisation technique, the study drugs were administered and AFOI was performed.
Results: The demographic data, patient comfort score, post intubation score, endoscopy and intubation times were comparable. The endoscopy was observed to be easy in all patients except 2 in MF group while intubation was easy in all (group D) versus 12 patients in group MF (P value 0.03). Significant haemodynamic response was observed in group MF while patients were more stable in group D. Postoperatively, 10 and two patients in groups D and MF respectively felt sedation was excellent (P value 0.02) while increased need for sedation was felt by one and three patients in groups D and MF respectively (P value 0.028). AFOI was remembered by six and one patients in groups D and MF respectively (P value 0.003). Two in group D and three in group MF had moderate discomfort. None experienced severe discomfort. The overall satisfaction score was comparable. There were no serious adverse events during the study.
Conclusions: Dexmedetomidine provides better intubating conditions and patient satisfaction without adversely affecting the airway or haemodynamic stability during AFOI.
Puchner W, Egger P, Pühringer F, Löckinger A, Obwegeser J, Gombotz H. Evaluation of remifentanil as single drug for awake fiberoptic intubation. Acta Anaesthesiol Scand 2002; 46:350-4.
Song JW, Kwak YL, Lee JW, Chang CH, Kim HS, Shim YH. The optimal effect site concentration of remifentanil in combination with intravenous midazolam and topical lidocaine for awake fibreoptic nasotracheal intubation in patients undergoing cervical spine surgery. Minerva Anestesiol 2012; 78:521-6.
Dhasmana S, Singh V, Pal US. Awake blind nasotracheal intubation in temporomandibular joint ankylosis patients under conscious sedation using fentanyl and midazolam. J Maxillofac Oral Surg 2010; 9:377-81.
Bergese SD, Patrick Bender S, McSweeney TD, Fernandez S, Dzwonczyk R, Sage K. A comparative study of dexmedetomidine with midazolam and midazolam alone for sedation during elective awake fiberoptic intubation. J Clin Anesth 2010; 22:35-40.
Xu YC, Xue FS, Luo MP, Yang QY, Liao X, Liu Y, Zhang YM. Median effective dose of remifentanil for awake laryngoscopy and intubation. Chin Med J (Engl) 2009; 122:1507-12.
Zhang X, He W, Wu X, Zhou X, Huang W, Feng X. TCI remifentanil vs. TCI propofol for awake fiberoptic intubation with limited topical anesthesia. Int J Clin Pharmacol Ther 2012; 50:10-6.
Bailey PL, Pace NL, Ashburn MA, Moll JW, East KA, Stanley TH. Frequent Hypoxemia and Apnea after sedation with fentanyl and midazolam. Anesthesiology 1990; 73:826-830.
Donaldson ABP, Meyer-Witting M, Roux A. Awake fibreoptic intubation under remifentanil and propofol targetcontrolled infusion. Anaesth Intens Care 2002; 30:93-95.
Rai MR, Parry TM, Dombrovskis A, Warner OJ. Remifentanil target-controlled infusion vs propofol target controlled infusion for conscious sedation for awake fibreoptic intubation: a double-blinded randomized controlled trial. Br J Anaesth 2008; 100:125-30.
Scher CS, Gitlin MC. Dexmedetomidine and lowdose ketamine provide adequate sedation for awake fibreoptic intubation. Can J Anaesth 2003; 50:607-610.
Abdelmalak B, Makary L, Hoban J, Doyle DJ. Dexmedetomidine as sole sedative for awake intubation in management of the critical airway. J Clin Anesth 2007;19:370-3.
Grant SA, Breslin DS, MacLeod DB, Gleason D, Martin G. Dexmedetomidine infusion for sedation during fiberoptic intubation: a report of three cases. J Clin Anesth 2004; 16:124-6.
Bergese SD, Khabiri B, Roberts WD, Howie MB, McSweeney TD, Gerhardt MA. Dexmedetomidine for conscious sedation in difficult awake fiberoptic intubation cases. J Clin Anesth 2007; 19:141-4.
Asai T, Shingu K. Difficulty in advancing a tracheal tube over a fiberoptic bronchoscope: incidence, causes and solutions. Br J Anaesth 2004; 92:870-81.
Maroof M, Khan RM, Jain D, Ashraf M. Dexmedetomidine is a useful adjunct for awake intubation. Can J Anaesth 2005; 52:776-7.
Chu KS, Wang FY, Hsu HT, Lu IC, Wang HM, Tsai CJ. The effectiveness of dexmedetomidine infusion for sedating oral cancer patients undergoing awake fibreoptic nasal intubation. Eur J Anaesthesiol 2010; 27:36-40.
Tsai CJ, Chu KS, Chen TI, Lu DV, Wang HM, Lu IC. A comparison of the effectiveness of dexmedetomidine versus propofol targetcontrolled infusion for sedation during fibreoptic nasotracheal intubation. Anaesthesia 2010; 65:254-9.