COMPARISON OF ORAL MIDAZOLAM,ORAL DEXMEDETOMIDINE AND ORAL MIDAZOLAM KETAMINE COMBINATION FOR PREMEDICATION IN PAEDIATRIC SURGERY

Abstract

Background: Children especially age group <10years undergoing operation may experience preoperative anxiety & may be uncooperative.This uncooperative behavior of children may be observed at the time of separation from parents, venipuncture or mask application. Untreated anxiety may lead to difficult induction, greater rescue analgesic needs, emergence delirium (ED), behavioural & postoperative psychological effects. An atraumatic premedication, calm separation from parents can minimize these problems and a smooth induction of anaesthesia can be achieved.Method : Prospective randomized double blind active controlled study was conducted in Government medical college & hospital, Aurangabad from 2018 to 2020 after Institution Ethics Committee approval. 75 ASA I & II subjects aged between 2 to 5 year weighing less than 15 Kg posted for elective paediatric surgery under general anaesthesia at tertiary care centre were selected. They were randomly allocated into 3 groups Group M ,Group M K & Group D with 25 subjects in each group using computer generated randomization list. Oral premedication was given in each group 30 minutes before surgery.Baseline heart rate,SBP and RR measured before administering premedication and at 10 minutes intervals up to 30 to 45 minutes after premedication. Results: Sedation & anxiolysis score at induction[S1] was significant higher in Group M K& Group D [p Value <0.05] compared to Group M. Sedation at the time of separation from parents [S2] was better in Group M K & Group D compared to Group M[p Value <0.05].Sedation during Mask Acceptance[S3] was better in Group M K & Group D compared to Group M[p Value <0.05].Wake up Behaviour [when the patient recovers from anaesthesia at end of surgery [S4] ] was assessed & Subjects were more Sedated[post anaesthesia] in Group D when compared to Group m & Group M K[p Value <0.05]. Time taken for maximum change in vital parameters was more in Group D followed by Group M K and Group M respectively p Value 0.001].There was significant changes in Vital parameters in Group D compared to Group M & Group M K .Bradycardia p Value 0.00044] & Hypotension [p Value 0.01]was more significant in Group D when compared to Group MK &Group M Conclusion: Oral Midazolam (0.2mg/kg) & Ketamine (2mg/kg) combination & oral Dexmedetomidine (0.5 g/kg) both provide satisfactory sedation levels & offers significant ease of separation from parents with satisfactory mask acceptance in children<10 years compared to oral Midazolam alone.