Impact of the Addition of Examples to the American Society of Anesthesiologists Physical Status Classification System.

Anesth Analg

From the Departments of *Anesthesiology & Perioperative Medicine †Medicine, Statistics Core, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California.

Published: March 2020


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Article Abstract

Examples of comorbidities for the widely used American Society of Anesthesiologists physical status (ASA-PS) classification system were developed and approved in 2014. We conducted a retrospective cohort study of patients with 4 comorbidities included in the examples as warranting a specific minimum ASA-PS class. For each comorbidity subgroup, we used interrupted time-series models to compare ASA-PS underclassification for the periods before (2011-2014) and after (2015-2017) the introduction of examples. Rates of underclassification ranged from 4.8% to 38.7%. We observed no evidence of a significant impact on ASA-PS classification with the introduction of examples in 2014.

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http://dx.doi.org/10.1213/ANE.0000000000004482DOI Listing

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