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

Anesth Analg. 2020 Mar;130(3):e54-e57. doi: 10.1213/ANE.0000000000004482.

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.

Publication types

  • Comparative Study
  • Observational Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acute Kidney Injury / complications
  • Acute Kidney Injury / diagnosis
  • Acute Kidney Injury / therapy
  • Anesthesia / adverse effects*
  • Body Mass Index
  • Clinical Decision-Making
  • Comorbidity
  • Decision Support Techniques*
  • Health Status Indicators*
  • Humans
  • Interrupted Time Series Analysis
  • Obesity / complications
  • Obesity / diagnosis
  • Predictive Value of Tests
  • Renal Dialysis
  • Retrospective Studies
  • Risk Assessment
  • Risk Factors
  • Shock, Septic / complications
  • Shock, Septic / diagnosis