Indian Journal of Anaesthesia  
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Year : 2019  |  Volume : 63  |  Issue : 11  |  Page : 900-907

Comparative evaluation of i-gel® insertion conditions using dexmedetomidine-propofol versus fentanyl-propofol - A randomised double-blind study

Department of Anesthesia, Lokmanya Tilak Municipal Medical College and General Hospital College Building, 4thFloor, Sulochana Shetty Road, Sion, Mumbai, Maharashtra, India

Correspondence Address:
Dr. Shalaka Sandeep Nellore
Department of Anaesthesia, College Building, 4th Floor, Sulochana Shetty Road, Sion, Mumbai - 400 022, Maharashtra
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ija.IJA_313_19

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Background and Aims: i-gel® insertion necessitates adequate depth of anaesthesia to prevent laryngospasm, gagging or limb movements. We aimed to compare i-gel® insertion conditions with propofol induction after pre-treatment with dexmedetomidine or fentanyl. Methods: Eighty ASAI/II patients undergoing general anaesthesia were randomised into Groups D (n = 40) and F (n = 40). Group D received 1 μg/kg dexmedetomidine over 10 minutes followed by 5ml of 0.9%normal saline (NS) over 2 minutes. Group F received 10 ml of 0.9%NS over 10 minutes followed by fentanyl 1 μg/kg over 2 minutes. Thirty seconds after study drugs, propofol 2 mg/kg was given. Ninety seconds after propofol, i-gel® was inserted. Overall insertion conditions were assessed by Modified Scheme of Lund and Stovener. Heart-rate (HR) and mean arterial pressure (MAP) were noted at baseline, after study drug, propofol induction and 1,3,5,10 minutes after i-gel® insertion. Respiratory rate and apnoea times were recorded. Results: Insertion conditions were comparable between both groups. Moderately relaxed jaw, coughing and movement was observed in more patients of Group F. Incidence of apnoea was significantly higher (P < 0.0001) in group F (18/40) than group D (3/40).Mean duration of apnoea in group F (284.5 ± 11.19 sec) was significantly higher than group D (217.17 ± 16.48 sec). Percentage drop in MAP from baseline after propofol was more in group F (10.3%) than group D (5.6%). MAP after induction was significantly lower in group F compared to group D (P = 0.002), but similar after i-gel® insertion, 1,3,5 and 10 minutes after insertion. After propofol (P = 0.003) and i-gel® insertion (P < 0.001), HR was significantly lower with dexmedetomidine. Conclusion: Dexmedetomidine and fentanyl provide comparable conditions for i-gel® insertion with propofol.

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