Related Experiment Video
Updated: Oct 12, 2025

Novel Methods for Intranasal Administration Under Inhalation Anesthesia to Evaluate Nose-to-Brain Drug Delivery
Published on: November 14, 2018
Efficacy of intranasal ketamine and midazolam for pediatric sedation: A double-blind, randomized clinical trial
Hossein Khoshrang1, Cyrus Emir Alavi1, Siamak Rimaz1
1Anesthesiology Research Center, Department of Anesthesiology, Alzahra Hospital, Guilan University of Medical Sciences , Rasht, Iran.
Insights
Intranasal ketamine and midazolam effectively sedate pediatric patients before surgery. While both are safe, ketamine prolonged recovery time in children undergoing urologic procedures.
Area of Science:
- Anesthesiology and Pain Management
- Pediatric Surgery
- Pharmacology
Background:
- Pediatric patients experience significant fear and anxiety during surgical procedures.
- Optimal drug and administration route for pediatric premedication remain undetermined.
- Intranasal (IN) administration offers a needle-free alternative for pediatric medication delivery.
Purpose of the Study:
- To compare the efficacy and safety of intranasal ketamine versus midazolam for premedication in pediatric patients.
- To evaluate sedation and separation anxiety scores in children receiving IN ketamine or midazolam.
- To assess hemodynamic stability and postoperative side effects associated with IN premedication.
Main Methods:
- A study involving 71 eligible pediatric patients aged 2 to 6 years undergoing elective urologic surgeries.
- Comparison of sedation and separation anxiety scores between intranasal ketamine (Group K) and intranasal midazolam (Group M) groups.
- Documentation and comparison of hemodynamic parameters and postoperative adverse events.
Main Results:
- No significant difference in sedation scores (P=0.17) or separation anxiety scores (P=0.01) between ketamine and midazolam groups.
- Significantly longer recovery time in the ketamine group (38.19±6.67 min) compared to the midazolam group (27.86±4.42 min) (P=0.01).
- Hemodynamic parameters remained within physiological limits in both groups, with no significant fluctuations.
Conclusions:
- Both intranasal ketamine and midazolam are effective and safe premedication options for inducing sedation in young children.
- Intranasal midazolam may offer a faster recovery profile compared to intranasal ketamine in pediatric surgical patients.
- Further research may explore optimal dosing and specific indications for each agent in pediatric premedication.
Background:
Pediatric patients feel significant fear and anxiety when undergoing surgeries. The ideal drug and its administration route have not been found yet. The aim of this study was to compare the efficacy and safety of intranasal (IN) ketamine and midazolam as premedication in children.
Methods:
We studied 71 eligible pediatric patients undergoing elective urologic surgeries, aged 2 to 6 years. The degree of sedation and separation scores was compared between the two groups. Additionally, hemodynamic parameters, before premedication, after induction of anesthesia, and during surgery were documented and compared between two groups. Postoperatively, any side effect was recorded as well.
Results:
Finally, the data from 71 children were analyzed. Recovery time was significantly longer in group K (ketamine) compared to group M (midazolam); 27.86±4.42 vs 38.19± 6.67 minutes respectively (P=0.01). No significant difference was observed in terms of sedation score between two groups of K & M; 3.29±0.78 vs 3 ±0.71 respectively (P=0.17), and not regarding separation score; 2.51±0.61 & 2.31±0.52 respectively (P=0.01). Vital signs were kept within the physiological limits in both groups with no marked fluctuations.
Conclusion:
To produce sedation in young children, both midazolam and ketamine were effective and safe by IN route.
Related Concept Videos
Parenteral Anesthetics: Overview
Inhalational Anesthetics: Overview
Drug Delivery: Enteral Route
Sedatives and Hypnotics: Overview
Sedative-hypnotics are categorized into barbiturates, benzodiazepines (BZDs), and non-benzodiazepines or Z-drugs. These drugs work by suppressing central nervous system activity, and this suppression is dose-dependent. Older sedative medications, like barbiturates, follow a linear curve in...
Stages of General Anesthesia
Sedatives and Hypnotics Drugs: Miscellaneous Agents
Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...

