Predictive value of EEG-derived pain threshold index for acute postoperative pain in children

Area of Science:

• Anesthesiology
• Pediatric Pain Management
• Neuroscience

Background:

• The pain threshold index (PTI) is a novel electroencephalogram (EEG)-derived indicator for pain recognition.
• While effective in adults, its utility in predicting acute postoperative pain in children is less established.
• This study aimed to evaluate the predictive value of PTI in pediatric patients.

Purpose of the Study:

• To investigate the prediction value of the EEG-derived pain threshold index (PTI) for acute postoperative pain in children.
• To assess the accuracy of PTI in identifying pain levels in pediatric surgical patients.
• To compare the predictive performance of PTI with other physiological indicators.

Main Methods:

• Eighty pediatric patients undergoing laparoscopic surgery were enrolled.
• Data collected included blood pressure, heart rate (HR), surgical pleth index (SPI), PTI, and EEG-derived sedative index-wavelet index (WLI).
• Postoperative pain was assessed using the Face, Legs, Activity, Cry, Consolability (FLACC) scale; receiver-operating characteristic (ROC) curve analysis was performed.

Main Results:

• The area under the curve (AUC) for PTI was 0.796 (95% CI: 0.694-0.895), indicating acceptable predictive accuracy.
• The AUC for SPI was 0.753 (95% CI: 0.632-0.874).
• The optimal cut-off values for discriminating mild from moderate to severe pain were 58 for PTI and 45 for SPI.

Conclusions:

• The pain threshold index (PTI) can predict acute postoperative pain in children with acceptable accuracy.
• Early recognition and treatment of pediatric postoperative pain can be facilitated by using PTI.
• PTI demonstrated good consistency with the surgical pleth index (SPI) in predicting pain.