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ORIGINAL ARTICLE
Year : 2020  |  Volume : 14  |  Issue : 2  |  Page : 271-276

A randomized controlled study comparing dexmedetomidine-midazolam with fentanyl-midazolam for sedation during awake fiberoptic intubation in anticipated difficult airway


1 Department of Anaesthesiology, Uttar Pradesh University of Medical Sciences, Etawah, Uttar Pradesh, India
2 Department of Social and Preventive Medicine, Uttar Pradesh University of Medical Sciences, Etawah, Uttar Pradesh, India

Correspondence Address:
Dr. Jay Brijesh Singh Yadav
Department of Anaesthesiology, Uttar Pradesh University of Medical Sciences, Saifai, Etawah, Uttar Pradesh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/aer.AER_44_20

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Background: Awake fibreoptic nasotracheal intubation is an effective technique for the management of patients with difficult airways. Adequate sedation with effective topicalization of the airway is important to overcome discomfort and achieve intubation successfully. Aim and Objectives: Our aim was to compare the effectiveness of dexmedetomidine-midazolam with fentanyl-midazolam infusion for providing conscious sedation during fibreoptic intubation in patients with anticipated difficult airway under topical anaesthesia. Materials and Methods: Thirty adult patients of ASA physical status classification I and II with anticipated difficult airway and planned for elective awake nasal fibreoptic intubation under conscious sedation were randomly allocated into two groups. Dexmedetomidine 1 μg.kg-1 diluted in 50 ml saline was infused in Group DM over 10 min and Fentanyl 2 μg.kg-1 diluted in 50 ml saline was infused in Group FM over 10 min. Topicalization of the airway was done in all patients. All patients were assessed for sedation score, ease of endotracheal tube placement, patient comfort and cooperation, tolerance to endotracheal tube, any adverse events and recall of procedure. Results: The score of the modified OAA/S was comparable between the groups (P > 0.05). Quality of AFOI was comparable in both groups (P > 0.05). The intubation time and first EtCO2 were significantly lower in dexmedetomidine group (P <0.05). Group DM also showed better hemodynamics and less episodes of desaturation than Group FM. Conclusion: Fentanyl-midazolam and dexmedetomidine-midazolam are both effective for awake fiberoptic intubation under topical anesthesia. Dexmedetomidine allows better endurance and more stable hemodynamics.


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