Background: With the implementation of value-based health care, it is of increasing interest to understand whether performing elective surgeries during off-time impacts surgical outcomes. The objective of this study was to evaluate the impact of start times on nonemergent cardiac operations.
Methods: The institutional Society of Thoracic Surgeons was used to identify all adult nonemergent cardiac operations performed between January 2008 and December 2015 at our institution. "Off-time" is defined as either operation "late starts," that is, an incision time after 3 PM and before 7 AM, or procedures occurring during the weekends. Univariate and multivariate logistic regression analyses were performed to examine its impact on in-hospital mortality and major adverse events. Available cost data were directly obtained from the departmental BIOME database.
Results: Of the 3406 cardiac operations included in the study, 2933 (86.1%) were normal-start and 473 (13.9%) were off-time-start operations. After adjusting for patient and operative characteristics, late operating room start times were not associated with increased in-hospital mortality (P = 0.28, confidence interval [CI] 95% = 0.99-1.03), readmissions (P = 0.21, CI 95% = 0.99-1.07), or major adverse events (P = 0.07, CI 95% = 1.00-1.12). In addition, there was no significant impact on total hospital cost (9.0% increase, P = 0.07).
Conclusions: These findings suggest that late operating room start times are not associated with increased mortality or other complications in a tertiary-care academic medical center. Our findings should be considered during operative scheduling to optimize resource distribution and patient care strategies.
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