Sudden Bispectral Index Reduction and Suppression Ratio Increase Associated with Bradycardia in a Patient Undergoing Breast Conserving Surgery
- Author:
Youngheun JO
1
;
Jae Man KIM
;
Sang Beom JEON
;
Se Ung PARK
;
Hye Jin KAM
;
Woo Hyun SHIM
;
Sung Hoon KIM
Author Information
- Publication Type:Case Report
- Keywords: Consciousness monitors; Bradycardia; Hypotension; Atropine
- MeSH: Anesthesia; Anesthesia, General; Atropine; Bradycardia; Brain; Breast; Consciousness; Consciousness Monitors; Female; Heart Rate; Humans; Hypotension; Mastectomy, Segmental; Middle Aged
- From: Journal of Neurocritical Care 2018;11(1):39-42
- CountryRepublic of Korea
- Language:English
- Abstract: BACKGROUND: The bispectral index (BIS) is a valuable indicator for measuring sedation levels and patient consciousness. Recent reports have highlighted its clinical value as an indicator for anesthesia-related cerebral hypoperfusion and ischemic brain damage. CASE REPORT: A 55-year-old female patient underwent right breast conservation surgery during general anesthesia. During surgery, the patient experienced abrupt bradycardia (heart rate of 36 bpm) without hypotension. During bradycardia, her BIS was severely reduced from 45 to 20 along with elvated suppression ratio (50). After injection of 0.5mg of atropine, her BIS level was recovered, her heart rate was increased, and her suppression ratio was decreased. CONCLUSION: The patient recovered from anesthesia without showing any signs of neurological sequelae based on BIS level monitoring.
