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Comparison of sublingual midazolam and dexmedetomidine for premedication in children
1Department of Anesthesiology, Pain and Perioperative Medicine, Sir Ganga Ram Hospital, Rajinder Nagar, New Delhi, India - nitinsethi77@yahoo.co.in.
Insights
Sublingual dexmedetomidine offers superior preoperative sedation in children compared to midazolam, ensuring smoother anesthesia induction and recovery, particularly for preschoolers. This study highlights its effectiveness in pediatric surgical settings.
Area of Science:
- Pediatric Anesthesiology
- Pharmacology
- Surgical Premedication
Background:
- Premedication reduces preoperative anxiety and aids anesthesia induction in children.
- Midazolam, a common pediatric premedicant, has drawbacks like postoperative behavioral changes.
- Dexmedetomidine, a selective alpha-2 adrenergic agonist, offers sedation mimicking natural sleep and aids recovery.
Purpose of the Study:
- To compare the effectiveness of sublingual dexmedetomidine versus sublingual midazolam as a premedicant in pediatric patients.
- To evaluate sedation levels, induction behavior, mask acceptance, and wake-up behavior.
Main Methods:
- Prospective, randomized, double-blind study of 100 children (1-12 years, ASA I/II).
- Group I received sublingual midazolam (0.25 mg/kg); Group II received sublingual dexmedetomidine (1.5 µg/kg).
- Assessed sedation, induction behavior, mask acceptance, and wake-up behavior using standardized scores.
Main Results:
- Dexmedetomidine group showed significantly lower sedation scores at parental separation (3.5 vs. 6, P<0.001).
- Preschoolers exhibited better mask acceptance and wake-up behavior with dexmedetomidine (scores of 1 vs. 2, P<0.001).
- Behavior at induction was comparable; scores were similar in school-aged children.
Conclusions:
- Sublingual dexmedetomidine is more effective for preoperative sedation than sublingual midazolam in children.
- Dexmedetomidine facilitates smoother anesthesia induction and awakening, especially in preschool-aged children.
- Offers a potentially improved alternative to midazolam for pediatric surgical premedication.
Background:
Premedication in children scheduled for surgery reduces preoperative anxiety and facilitates a smooth induction of anesthesia. Midazolam is a commonly used premedication in children but, because of its undesirable effects such as postoperative behavior changes and cognitive impairment, it is not an ideal premedicant. Dexmedetomidine, a highly specific a2-adrenergic receptor agonist, produces sedation which mimics natural stage 2 non-rapid eye movement sleep and helps in early postoperative recovery. The objective of our study was to evaluate the effectiveness of sublingual dexmedetomidine in comparison to sublingual midazolam as premedicant in children
Methods:
This prospective, randomized, double-blind study enrolled 100 children aged 1 to 12 years belonging to ASA physical status I or II scheduled to undergo inguinal hernia repair, orchidopexy or circumcision, under general anesthesia. The children were randomly allocated into two groups of 50 each. Children in group I were premedicated with sublingual midazolam 0.25 mg/kg, while those in group II with sublingual dexmedetomidine 1.5 µg/kg. Sedation was assessed using a 6-point sedation score. Behavior at induction, wake-up behavior and mask acceptance was evaluated using a 4-point scoring system.
Results:
The median sedation score at parental separation was 6 in group I as compared to 3.5 in group II (P<0.001). The behavior score at induction was comparable in both the groups. The median mask acceptance score (P<0.001) and wake-up behavior score (P=0.001) in preschool children was 2 in group I as compared to 1 in group II. However, in school-aged children both the scores were comparable.
Conclusion:
Sublingual dexmedetomidine provides more effective preoperative sedation as compared to sublingual midazolam across all the age groups and allows a smooth anesthesia induction and awakening especially in the preschool children.
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