Effects of Different Levels of Intraoperative Noise Exposure on Postoperative Pain Intensity and Electroencephalogram Total Power in Patients Undergoing Lower Abdominal Surgery under General Anesthesia

Key Points

• To examine the effects of intraoperative noise on postoperative pain intensity and EEG power in patients undergoing lower abdominal surgery under general anesthesia.
• Analyzed data from surgeries conducted under general anesthesia.
• Measured levels of intraoperative noise exposure.
• Assessed postoperative pain intensity and EEG power in different frequency bands.
• Higher intraoperative noise exposure correlated with increased postoperative pain within 0-24 hours.
• Patients exposed to more noise required higher levels of analgesics.
• Total power of EEG decreased with higher noise exposure.