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Multidrug intravenous anesthesia for children undergoing MRI: a comparison with general anesthesia
Ahmed A Shorrab1, Atef D Demian, Mohamed M Atallah
1Department of Anesthesia, Faculty of Medicine, University of Mansoura, Mansoura, Egypt. shorraba@yahoo.com
Insights
Intravenous anesthesia with midazolam, ketamine, and propofol (MKP) is safe for pediatric MRI. The MKP regimen showed comparable safety and recovery to general endotracheal anesthesia, with fewer repeat scans needed.
Area of Science:
- Anesthesiology
- Pediatric Imaging
- Pharmacology
Background:
- Pediatric magnetic resonance imaging (MRI) often requires anesthesia.
- A multidrug intravenous anesthesia regimen (midazolam, ketamine, propofol) was evaluated.
- This regimen was compared against general endotracheal anesthesia.
Purpose of the Study:
- To compare the safety and efficacy of intravenous anesthesia (midazolam, ketamine, propofol) versus general endotracheal anesthesia in children undergoing MRI.
- To assess adverse events and recovery variables in relation to age strata.
Main Methods:
- A randomized comparative study involving 655 children.
- Children received either general endotracheal anesthesia (GET) or intravenous anesthesia (MKP).
- Physiological parameters, desaturation, airway issues, and repeat scan needs were monitored.
Main Results:
- Both anesthesia regimens were effective, with only 0.6% of the MKP group requiring a repeat scan.
- The incidence of side effects was similar between MKP (7.7%) and GET (7.0%) groups.
- Infants under 1 year experienced a higher incidence of adverse events within both groups.
Conclusions:
- Intravenous midazolam, ketamine, and propofol provides safe and adequate anesthesia for pediatric MRI.
- The MKP regimen is comparable to general endotracheal anesthesia for most pediatric patients.
- Careful monitoring is advised, especially for infants under one year of age.
Background:
We used a multidrug intravenous anesthesia regimen with midazolam, ketamine, and propofol to provide anesthesia for children during magnetic resonance imaging (MRI). This regimen was compared with general anesthesia in a randomized comparative study. Outcome measures were safety, side effects and recovery variables in addition to adverse events in relation to age strata.
Methods:
The children received either general anesthesia with propofol, vecuronium and isoflurane [general endotracheal anesthesia (GET) group; n=313] or intravenous anesthesia with midazolam, ketamine, and propofol [intravenous anesthesia (MKP) group; n=342]. Treatment assignment was randomized based on the date of the MRI. Physiological parameters were monitored during anesthesia and recovery. Desaturation (SpO2<93%), airway problems, and the need to repeat the scan were recorded. The discharge criteria were stable vital signs, return to baseline consciousness, absence of any side effects, and ability to ambulate.
Results:
With the exception of two children (0.6%) in the MKP group, all enrolled children completed the scan. A significantly greater number (2.3%) required a repeat scan in the MKP group (P<0.05) and were sedated with a bolus dose of propofol. The total incidence of side effects was comparable between the MKP (7.7%) and GET groups (7.0%). Infants below the age of 1 year showed a significantly higher incidence of adverse events compared with the other age strata within each group. Within the MKP group, risk ratio was 0.40 and 0.26 when comparing infants aged below 1 year with the two older age strata, respectively. Recovery characteristics were comparable between both groups.
Conclusions:
Intravenous midazolam, ketamine and propofol provides safe and adequate anesthesia, comparable with that obtained from general endotracheal anesthesia, for most children during MRI.
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