Perioperative medicine & outcomes
Intraoperative Frontal Electroencephalogram Alpha Power Is Associated with Postoperative Mortality and Other Adverse Outcomes
Main finding · Postoperative mortality risk per alpha powerResult — go to the resultHazard ratio 0.92 95% CI 0.85–0.99Authors' conclusion
Intraoperative EEG alpha power is independently associated with postoperative mortality and adverse outcomes
Study context
- Population
- Patients undergoing surgery with GA with intraoperative EEG recordings at Massachusetts General Hospital (Boston, Massachusetts)
- Participants
- 1,081 patients
- Exposure
- Intraoperative frontal EEG alpha power and postoperative outcomes
- Outcome
- Postoperative mortality, measured from date of surgery to date of death or last follow-up
Methodological detailspropensity weighted, single-centre
- Propensity weighted
- Single-centre
Main finding
Postoperative mortality risk per alpha power
Hazard ratio
0.92
95% CI 0.85–0.99
P = 0.039
Alpha power
HR 0.92 (95% CI 0.85–0.99); P = 0.039
Per alpha power, as printed
As reported in the abstract
Observational data: associations, not effects.
Secondary outcomes
30-day mortality
| OR (95% CI) | P value | ||
|---|---|---|---|
| Alpha power | 0.81 (0.66–0.95) | P = 0.010 | |
| 0.512Odds ratio (log scale) |
90-day mortality
| OR (95% CI) | P value | ||
|---|---|---|---|
| Alpha power | 0.68 (0.55–0.79) | P < 0.001 | |
| 0.512Odds ratio (log scale) |
180-day mortality
| OR (95% CI) | P value | ||
|---|---|---|---|
| Alpha power | 0.75 (0.66–0.83) | P < 0.001 | |
| 0.512Odds ratio (log scale) |
1-yr mortality
| OR (95% CI) | P value | ||
|---|---|---|---|
| Alpha power | 0.85 (0.79–0.91) | P < 0.001 | |
| 0.512Odds ratio (log scale) |
Discharge to long-term care
| OR (95% CI) | P value | ||
|---|---|---|---|
| Alpha power | 0.91 (0.86–0.96) | P < 0.001 | |
| 0.512Odds ratio (log scale) |
30-day readmission, hospital and PACU LOS
- No significant associations with alpha power
Original publication
Intraoperative Frontal Electroencephalogram Alpha Power Is Associated with Postoperative Mortality and Other Adverse Outcomes. Anesthesiology. Published 27 November 2024. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →