• Chenchen Tian, Laura Hawryluck, George Tomlinson, Frances Chung, Scott Beattie, Matthew Miller, Najia Hassan, David T Wong, Jean Wong, Julie Hudson, Timothy Jackson, and Mandeep Singh.
• Department of Anesthesiology, University Health Network, Toronto, Ontario, Canada; University of Toronto, Toronto, Ontario, Canada.
• J Clin Anesth. 2022 May 1; 77: 110639.

Study ObjectiveTo determine the impact of an enhanced monitoring pathway consisting of continuous postoperative cardio-respiratory monitoring on adverse outcomes after bariatric.DesignSingle-center, retrospective cohort study.PatientsAdult patients who underwent bariatric surgeries between 2009 and 2016.InterventionsWe evaluated the use of an enhanced monitoring pathway consisting of a distant, continuous, non-invasive respiratory monitoring system on postoperative cardio-respiratory complications in patients undergoing bariatric surgery. Treating physicians had the option to assign patients to enhanced monitoring (intervention group) in the postoperative period for suspected or diagnosed OSA or other clinical concerns. The control group had intermittent vital sign checks as per institutional standards.MeasurementsThe primary outcome was a composite of cardio-respiratory complications (rapid response team activation, intensive care admission, respiratory complications), major adverse cardiac events, and all-cause mortality. The secondary outcome was length of stay (LOS).Main ResultsOf 1450 patients, 752 patients received enhanced monitoring (intervention) and 698 patients received standard monitoring (control). Univariate analysis showed that, compared to control, enhanced monitoring was associated with lower odds of composite cardio-respiratory complications (OR: 0.41, 95%CI: 0.32-0.53, p < 0.001) and lower odds of prolonged LOS > 2 days (OR: 0.37, 95% CI: 0.28-0.49, p < 0.001. After adjusting for potential confounders, enhanced monitoring remained associated with a reduction in composite cardio-respiratory complications (OR: 0.64, 95% CI: 0.46-0.88, p = 0.005).ConclusionsOur study demonstrates that postoperative enhanced monitoring pathway was associated with a lower incidence of cardio-respiratory composite events, compared to a standard of care, in patients undergoing bariatric surgery. As our results show association rather than causation, future prospective randomized trials are needed to confirm the benefit of enhanced monitoring. Findings of our study add to the existing literature involved in clinical management pathways to reduce the incidence of adverse postoperative outcomes in high-risk patients undergoing inpatient surgeries.Copyright © 2021 Elsevier Inc. All rights reserved.

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