Low-dose ketamine: efficacy in pediatric sedation

Area of Science:

• Pediatric Emergency Medicine
• Pharmacology
• Sedation Techniques

Background:

• Intravenous ketamine is frequently used for procedural sedation in emergency departments.
• The standard recommended starting dose is 1.5 mg/kg.
• Lower ketamine doses may offer a safer alternative for pediatric procedural sedation.

Purpose of the Study:

• To evaluate the efficacy of lower intravenous ketamine doses (0.5 to 1.0 mg/kg) for procedural sedation in pediatric patients.
• To determine if reduced ketamine dosages can achieve adequate sedation in a pediatric emergency setting.

Main Methods:

• Retrospective review of quality assurance data from a pediatric emergency department.
• Patients received a standardized initial dose of IV ketamine (0.5 mg/kg) with additional doses as needed, up to a maximum of 2.0 mg/kg.
• Sedation efficacy was assessed by attending physicians or fellows after each ketamine administration.

Main Results:

• Adequate procedural sedation was achieved in 97% of 72 pediatric patients.
• 88% of patients were successfully sedated with an initial dose of 1.0 mg/kg or less of ketamine.
• 44% of patients required 0.75 mg/kg or less for initial adequate sedation.

Conclusions:

• Low-dose intravenous ketamine (0.5 to 1.0 mg/kg) shows promise for pediatric procedural sedation.
• The majority of pediatric emergency department patients can be effectively sedated using 1.0 mg/kg of ketamine.
• This study supports the use of reduced ketamine dosages in pediatric procedural sedation.