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[Electroclinical aspects of intramuscular methohexital anesthesia in children]
Abstract:
Intramuscular methohexital is used in children for short-term anaesthesia. As a seizure was observed in two of our cases after administration of this barbiturate, an EEG study was performed. The EEG pattern was characterized by a particularly slow, sharp, high voltage stage with a decrease of fast rhythms (stage 3a), then fast and sharp rhythms becoming more and more frequent (stage 3b). These stages were particularly pronounced and prolonged in children over 3 years of age, with myoclonic jerks observed in 6 cases, beginning about 3 min after methohexital injection and at the same time as the clinical seizures. These results are discussed in terms of previously reported descriptions of barbiturate anaesthesia, and especially of i.m. or i.v. methohexital anaesthesia. This anaesthetic, although reliable and easy to use, should in our opinion be avoided in epileptic children.
Insights
Intramuscular methohexital can cause seizures in children, particularly those over 3 years old. This anesthetic should be avoided in epileptic children due to prolonged EEG abnormalities and myoclonic jerks.
Area of Science:
- Anesthesiology
- Pediatric Neurology
- Clinical Neurophysiology
Context:
- Intramuscular methohexital is a common anesthetic for pediatric short-term procedures.
- Seizures were observed in two children post-administration, prompting further investigation.
Purpose:
- To investigate the electroencephalogram (EEG) patterns associated with intramuscular methohexital administration in children.
- To assess the risk of seizure activity and myoclonic jerks in pediatric patients receiving this anesthetic.
Summary:
- EEG studies revealed characteristic slow, sharp, high-voltage patterns (stage 3a) followed by increasingly frequent fast, sharp rhythms (stage 3b).
- These EEG changes and clinical seizures, including myoclonic jerks, were more pronounced and prolonged in children over 3 years of age.
- The findings suggest a potential contraindication for methohexital in epileptic children.
Impact:
- Highlights the potential neurological side effects of methohexital in pediatric anesthesia.
- Informs clinical practice regarding the use of methohexital in children, especially those with a history of epilepsy.
- Contributes to the understanding of barbiturate-induced EEG changes and seizure activity in a pediatric population.