Related Experiment Video
Updated: Aug 10, 2026
Investigating Social Cognition in Infants and Adults Using Dense Array Electroencephalography dEEG
Published on: June 27, 2011
The use of choral hydrate in pediatric electroencephalography
1Department of Neurosciences, King Faisal Specialist Hospital & Research Center, MCB J-76, PO Box 40047, Jeddah 21499, Kingdom of Saudi Arabia. Tel. 00 966 2 667 7777 Ext 5819. Fax. 00966 2 667 7777 Ext 5813.
Insights
Chloral hydrate effectively induces sleep for pediatric electroencephalograms but often fails to sustain it, especially in children with neurological issues. This can impact the quality of diagnostic EEG recordings.
Area of Science:
- Pediatric Neurology
- Clinical Neurophysiology
- Pharmacology
Background:
- Sleep activates epileptiform discharges, making induced sleep crucial for EEG diagnostics.
- Chloral hydrate is a common sedative for pediatric EEG, but its efficacy and limitations require further study.
Purpose of the Study:
- To evaluate the effectiveness and limitations of using chloral hydrate for pediatric electroencephalography (EEG) sedation.
- To assess the impact of chloral hydrate on EEG recording quality and the detection of epileptiform discharges.
Main Methods:
- Prospective analysis of 159 pediatric EEGs.
- Data collection on chloral hydrate use by a dedicated technologist.
- Independent review of EEG recordings and requisitions by a certified electroencephalographer.
Main Results:
- Chloral hydrate induced sleep in 97% of cases, but 34% woke prematurely, particularly those with chronic neurological abnormalities.
- Natural sleep EEGs were more likely to capture sleep onset (82% vs 10%) and contain epileptiform discharges (p<0.001) compared to sedated EEGs.
- Children with chronic neurological abnormalities were more likely to receive chloral hydrate (OR=9.8).
Conclusions:
- While effective for sleep induction, chloral hydrate's hypnotic effects are often not sustained during pediatric EEG.
- Premature awakening, especially in children with neurological impairments, limits the diagnostic value of chloral hydrate-induced sleep.
- Natural sleep EEGs provide better opportunities for capturing sleep onset and epileptiform activity.
Objective:
Sleep is a known activator of epileptiform discharges on electroencephalography. Chloral hydrate is used frequently for electroencephalography sedation. Our objectives were to study the value and limitations of chloral hydrate.
Methods:
One hundred and fifty nine consecutive pediatric electroencephalograms were included prospectively. One electroencephalography technologist collected chloral hydrate related data. Electroencephalogram requisitions and recordings were reviewed separately by one certified electroencephalographer.
Results:
The children`s ages ranged between 8 days to 19 years (mean=5.7 years). Natural sleep was recorded in 11% and only 2% were sleep deprived. Sedation was given to 45% mostly using chloral hydrate (96%). Children with chronic neurological abnormalities were more likely to receive chloral hydrate (odds ratio=9.8, 95% confidence interval=4.5-21). Chloral hydrate was effective in inducing sleep in 97%, however, 34% of the children woke up spontaneously before the test was completed, particularly those with chronic neurological abnormalities (p=0.0003). A second dose was necessary in 13%. Recording an initial period of wakefulness followed by sleep onset was more likely achieved in natural sleep electroencephalograms when compared to the sedated group (82% vs 10%, p<0.0001). These electroencephalograms were more likely to contain epileptiform discharges (p<0.001).
Conclusion:
Although chloral hydrate was effective in sleep induction, the sleep onset was frequently missed and the hypnotic effects were not sustained, particularly in children with chronic neurological abnormalities.
More Related Videos
10:22Interictal High Frequency Oscillations Detected with Simultaneous Magnetoencephalography and Electroencephalography as Biomarker of Pediatric Epilepsy
Published on: December 6, 2016
05:15Author Spotlight: Assessing the Feasibility of Using Amplitude-Integrated EEG During Neonatal Transport
Published on: June 21, 2024
