Falsely increased bispectral index score during deep hypothermic circulatory arrest in cardiac surgery

2 patients undergoing cardiac surgery with deep hypothermic circulatory arrest (DHCA), including a 60-year-old male with type III chronic aortic dissection, thoracic aortic aneurysm, and severe aortic valve regurgitation.

Bispectral index score (BIS) monitoring

Accuracy of bispectral index score (BIS) during deep hypothermic circulatory arrestsurrogate