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J Anaesthesiol Clin Pharmacol. 2019 Jul-Sep;35(3):368-372. doi: 10.4103/joacp.JOACP_104_18.

Dexmedetomidine with propofol versus fentanyl with propofol for insertion of Proseal laryngeal mask airway: A randomized, double-blinded clinical trial.

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1
Department of Anesthesia and Pain Medicine, Medica Superspecialty Hospital, Kolkata, West Bengal, India.

Abstract

Background and Aims:

Successful insertion of the proseal laryngeal mask airway (PLMA) requires much greater doses of propofol as compared to classic laryngeal mask (CLMA). Dexmedetomidine and fentanyl are equally effective adjuvants for CLMA insertion. We designed this study to compare the efficacy of these two drugs as sole adjuvant in PLMA insertion.

Material and Methods:

Seventy four American Society of Anesthesiologists (ASA) I and II patients were randomly allocated to receive either dexmedetomidine 1 μg/kg [Group PD] or fentanyl 1 μg/kg [Group PF]. Study drugs were diluted in 10 ml NS and administered over 10 min prior to induction of anesthesia with 2.5 mg/kg propofol. PLMA insertion condition was measured according to the Muzi scoring system. Score ≤2 was considered optimal for PLMA insertion. Patient's cardio-respiratory parameters, emergence time, and postoperative pain were also recorded.

Results:

In our study 83.8% patients in the group PF and 91.9% in the group PD achieved optimal insertion condition (not significant). Hemodynamic stability was maintained in both the groups but the incidence of apnea was significantly higher in the PF group (P = 0.011). We also observed that emergence time was prolonged but postoperative pain scores were significantly lower in the PD group (P < 0.001).

Conclusion:

We conclude that both dexmedetomidine and fentanyl in a dose of 1 μg/kg when used before induction with propofol provide comparable conditions for successful PLMA insertion. Dexmedetomidine has additional advantage of preserving spontaneous respiration and providing better analgesia.

KEYWORDS:

Dexmedetomidine; fentanyl; proseal laryngeal mask airway

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