Lower bispectral index values in children who are intellectually disabled

Area of Science:

• Anesthesiology
• Neuroscience
• Pediatrics

Background:

• Limited data exist on bispectral index (BIS) monitoring in intellectually disabled children.
• Factors like epilepsy, brain pathology, or medications may affect BIS readings.
• This study addresses the lack of information on BIS use in this population.

Purpose of the Study:

• To compare BIS values at four anesthesia stages between intellectually disabled children and controls.
• To evaluate BIS's ability to differentiate consciousness states in both groups.

Main Methods:

• Included 18 intellectually disabled children and 35 controls (aged 2-13 years).
• Recorded BIS values, key anesthetic events, and vital signs.
• Assessed BIS performance using receiver operating characteristic curves.

Main Results:

• Intellectually disabled children had significantly lower BIS values in awake, intraoperative, and emergence states.
• BIS monitor showed comparable discriminative properties for consciousness between groups.
• Optimal BIS cutoff for consciousness discrimination was 28 points lower in the disabled group.

Conclusions:

• Anesthesiologists should anticipate lower BIS values in intellectually disabled children.
• There's a risk of misinterpreting consciousness due to altered BIS values.
• Further multicenter research is needed to establish optimal BIS monitoring protocols for this population.