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Updated: May 30, 2026

Drug-Induced Sleep Endoscopy (DISE) with Target Controlled Infusion (TCI) and Bispectral Analysis in Obstructive Sleep Apnea
Published on: December 6, 2016
Midazolam-ketamine combination for moderate sedation in upper GI endoscopy
Farzaneh Motamed1, Yasaman Aminpour, Hesam Hashemian
1Department of Gastroenterology, Tehran University of Medical Sciences, Tehran, Iran.
Insights
Oral ketamine with IV midazolam provided safe and effective sedation for pediatric upper gastrointestinal endoscopy (UGIE). This combination led to better patient comfort and faster recovery compared to other regimens.
Area of Science:
- Pediatric Gastroenterology
- Anesthesiology
- Sedation Pharmacology
Background:
- Effective sedation is crucial for pediatric upper gastrointestinal endoscopy (UGIE) to ensure patient comfort and procedural success.
- Optimizing sedation regimens in children requires balancing efficacy, safety, and patient experience.
Purpose of the Study:
- To compare the quality of sedation using three distinct regimens in pediatric patients undergoing UGIE.
- To evaluate the efficacy and safety of oral ketamine and intravenous midazolam compared to placebo and oral fentanyl.
Main Methods:
- A randomized study involving 150 pediatric patients undergoing UGIE.
- Three groups received different sedation: Group A (placebo + IV midazolam), Group B (oral ketamine + IV midazolam), and Group C (oral fentanyl + IV midazolam).
- Sedation depth and patient comfort were primary endpoints, with safety and recovery time also assessed.
Main Results:
- Group B (oral ketamine + IV midazolam) demonstrated significantly lower midazolam requirements.
- Patients in Group B experienced less distress during IV placement and parental separation, higher comfort, and greater endoscopist satisfaction.
- Group B showed a shorter recovery time, with all regimens proving safe and complications managed successfully.
Conclusions:
- Synergistic sedation with oral ketamine and IV midazolam is a safe and suitable option for pediatric UGIE.
- The oral route of ketamine administration may contribute to a higher incidence of vomiting compared to previous studies.
- This regimen offers advantages in terms of patient comfort, procedural ease, and recovery efficiency.
Objectives:
The aim of the study was to compare the quality of sedation with 3 different sedation regimens in upper gastrointestinal endoscopy (UGIE) in pediatric patients.
Methods:
One hundred fifty consecutive children who underwent UGIE were randomly assigned to 1 of the 3 medication regimens. Patients in group A (n = 49) received placebo. Forty-five minutes after the placebo was given, repeated intravenous (IV) doses of 0.1 mg/kg midazolam were administered titrated to achieve a level of deep sedation. Patients in group B (n = 51) received oral ketamine instead of placebo, and patients in group C (n = 50) received oral fentanyl instead of placebo with the same methodology and sedation endpoint.
Results:
The mean dose of midazolam administered in group B patients was remarkably lower compared with that of groups A and C. Patients in group B showed less distress in IV line placement and separation from parents, higher comfort level, more endoscopist satisfaction, and higher sedation depth compared with groups A and C. The recovery time was significantly shorter in group B. All of the 3 regimens were safe. All of the complications were managed successfully.
Conclusions:
Our data suggest that synergistic sedation with oral ketamine and IV midazolam for UGIE in children is a suitable and safe sedation. The higher rate of vomiting in group B in contrast to previous studies must be caused mainly by the oral route of ketamine administration.
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