Journal
ANESTHESIOLOGY
Volume 123, Issue 4, Pages 775-785Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/ALN.0000000000000822
Keywords
-
Categories
Funding
- National Institutes of Health (Bethesda, Maryland) [KL2 RR024987-01]
- Foundation for Anesthesia Education and Research (Schaumburg, Illinois)
- Barnes Jewish Hospital Foundation (St. Louis, Missouri)
- Winnipeg Regional Health Authority and University of Manitoba, Department of Anesthesia (Winnipeg, Manitoba, Canada)
- Department of Anesthesiology at Washington University in St. Louis (St. Louis, Missouri)
- Department of Anesthesiology at University of Chicago (Chicago, Illinois)
- Department of Anesthesiology at University of Michigan (Ann Arbor, Michigan)
- National Center for Advancing Translational Sciences, National Institutes of Health [UL1 TR000448, TL1 TR000449]
Ask authors/readers for more resources
Background: An intraoperative concurrence of mean arterial pressure less than 75 mmHg, minimum alveolar concentration less than 0.8, and bispectral index less than 45 has been termed a triple low state. An association between triple low and postoperative mortality has been reported but was not replicated in a subsequent study. The authors pooled existing data from clinical trials to further evaluate the purported association in an observational study. Methods: This retrospective observational study included 13,198 patients from three clinical trials: B-Unaware, BAG-RECALL, and Michigan Awareness Control Study. Patients with greater than 15 not necessarily consecutive minutes of triple low were propensity matched to controls with similar characteristics and comorbidities. A multivariable Cox proportional hazards model was used to evaluate the association between triple low duration and postoperative mortality. Results: Thirty-day mortality was 0.8% overall, 1.9% in the triple low cohort, and 0.4% in the nontriple low cohort (odds ratio, 5.16; 95% CI, 4.21 to 6.34). After matching and adjusting for comorbidities, cumulative duration of triple low was significantly associated with an increased risk of mortality at 30 days (hazard ratio, 1.09; 95% CI, 1.07 to 1.11, per 15 min) and 90 days (hazard ratio, 1.09; 95% CI, 1.08 to 1.11, per 15 min). Conclusion: There is a weak independent association between the triple low state and postoperative mortality, and the propensity-matched analysis does not suggest that this is an epiphenomenon.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available