Related Experiment Video
Updated: May 14, 2026

Anesthesia and Intubation of Preadolescent Mouse Pups for Cardiothoracic Surgery
Published on: June 2, 2022
Ketamine and atropine for pediatric sedation: a prospective double-blind randomized controlled trial
Payman Asadi1, Hamed-Basir Ghafouri, Mohammadreza Yasinzadeh
1Poursina Hospital, Guilan University of Medical Sciences, Rasht, Iran.
Insights
Adding atropine to ketamine sedation in children significantly reduces hypersalivation. This combination proved safe, with no adverse effects on procedure duration or success rates in emergency departments.
Area of Science:
- Pediatric Emergency Medicine
- Pharmacology
- Clinical Trials
Background:
- Sedation in pediatric emergency care presents challenges for physicians.
- Effective medications with minimal complications and good analgesia are crucial.
- This study evaluated ketamine's adverse effects with atropine versus placebo.
Purpose of the Study:
- To assess the safety and efficacy of adding atropine to ketamine for pediatric procedural sedation.
- To compare adverse effects, specifically hypersalivation, between ketamine with atropine and ketamine with placebo.
- To determine the impact on procedure and sedation duration.
Main Methods:
- Prospective randomized controlled trial with 200 pediatric patients (2-15 years).
- Two groups received ketamine (1 mg/kg IV); one group also received atropine (0.01 mg/kg IV), the other received placebo.
- Adverse effects and treatment durations were recorded.
Main Results:
- No significant differences in mean age, procedure time, or sedation duration between groups.
- Hypersalivation was significantly reduced in the atropine group (12% vs. 28%).
- Nausea and vomiting showed differences, but only hypersalivation reached statistical significance. Low oxygen saturation (2%) and no apnea/laryngospasm reported.
Conclusions:
- Atropine addition to ketamine significantly mitigates hypersalivation in pediatric procedural sedation.
- This combination does not negatively impact procedure duration or success rates.
- Ketamine with atropine is a safe and effective option for managing hypersalivation during pediatric sedation.
Introduction:
Sedation in children can be a challenge for emergency physicians, which demands for selecting an effective medication with few complications and good analgesic effects. This study has been performed to evaluate the adverse effects of ketamine while using either atropine or placebo in emergency departments.
Methods:
This is a prospective randomized controlled trial involving 200 patients with age ranging between 2 and 15 years, who need a painful procedure. Participants randomly were divided into 2 groups both treated by ketamine (1 mg/kg intravenously administered); group 1 received excessive intravenous atropine (0.01 mg/kg), whereas distilled water was given to group 2 as placebo. Adverse effects and duration of the treatments were recorded.
Results:
From March to September 2010, 200 of 218 eligible patients were enrolled. The mean (SD) age of patients in the intervention group was 7.0 (3.6) years that showed no statistical difference with the control group (age range, 2-15 years; mean, 7.1 [3.8] years). The mean procedure and sedation time between the intervention and placebo groups were not significantly different (P = 0.919 and 0.783, respectively). Several differences between the intervention and placebo groups were noted including nausea and vomiting, but only the difference in hypersalivation was statistically significant (12% vs 28%). Low oxygen saturation was reported only in 2% of the participants, whereas none of the children experienced apnea or laryngospasm during the sedation process.
Conclusions:
Atropine added to ketamine significantly reduces hypersalivation without producing any adverse effects on the procedure duration or success rate.
Related Concept Videos
Parenteral Anesthetics: Overview
Inhalational Anesthetics: Overview
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...
Depolarizing Blockers: Pharmocokinetics
Stages of General Anesthesia
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...