The impact of anesthesia and surgical provider characteristics on outcomes after spine surgery
Information regarding the impact of provider characteristics on perioperative outcomes in the spine surgery setting is limited. Existing studies primarily consider the impact of surgical provider volume. This analysis sought to identify the impact of anesthesiologist and surgeon volume and experience as well as anesthesia care team composition on adverse outcomes following anterior cervical discectomy and fusions (ACDF) and posterior lumbar fusions (PLF).
We identified 5900 patients who underwent ACDF or PLF procedures at a high-volume orthopedic institution from 2005 to 2014. Provider characteristics of interest were anesthesiologist and surgeon volume and experience along with anesthesia care team composition. Multivariable logistic regression models were used to evaluate the outcomes of any complication, cardiopulmonary complication, and prolonged length of stay (> 7 days). Intraclass correlation coefficients were calculated to determine how much variation in outcomes could be explained by provider characteristics.
There were no significant relationships between provider characteristics and perioperative outcomes among ACDF patients. Within the PLF cohort, surgeon annual case volume > 25 was associated with decreased odds of prolonged length of stay, while anesthesia resident involvement was associated with increased odds of prolonged length of stay. Surgeon characteristics explained the greatest proportion of variation in outcomes while anesthesiologist characteristics explained the least.
Anesthesia provider volume and experience did not significantly impact the odds of adverse outcome for ACDF and PLF patients. Higher surgeon volume was exclusively associated with decreased odds of prolonged length of stay following PLF. Further study is necessary to determine if these relationships persist in a less-specialized setting.
KeywordsAnesthesiologists Surgeons Case volume Anterior cervical discectomy and fusion Posterior lumbar fusion
Compliance with ethical standards
Conflict of interest
Lauren A. Wilson, Megan Fiasconaro, Jashvant Poeran, Jiabin Liu, and Federico Girardi have no conflict of interest. Stavros G. Memtsoudis is a director on the boards of the American Society of Regional Anesthesia and Pain Medicine (ASRA) and the Society of Anesthesia and Sleep Medicine (SASM). He is a one-time consultant for Sandoz Inc. and Teikoku and the holder of US Patent ulticatheter Infusion System. US-2017-0361063. He is the owner of SGM Consulting, LLC and co-owner of FC Monmouth, LLC. None of the above relations influenced the conduct of the present study.
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