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Revista Mexicana de Anestesiología

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2026, Number 1

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Rev Mex Anest 2026; 49 (1)

Main limitations of the ASA physical status classification. Study of interobserver variability

Martínez-Lapido M, Mato-Búa R, Taboada-Muñiz M, Vilar-Castro A, López-López D, Nieto-Mouronte CM
Full text How to cite this article 10.35366/122380

DOI

DOI: 10.35366/122380
URL: https://dx.doi.org/10.35366/122380

Language: Spanish
References: 24
Page: 14-18
PDF size: 431.12 Kb.


Key words:

ASA classification, pre-anesthetic evaluation, perioperative risk, interobserver variability, physical status.

ABSTRACT

The ASA classification is used by healthcare professionals all around the world to assess the physical condition of a patient prior to surgery. Two of its limitations are subjectivity and interobserver variability. The aim of this study is to analyze the interobserver variability of the scale between anesthesiologists at two Spanish hospitals, in A Coruña and in Ferrol. An observational and descriptive study was carried out in these hospitals, using an anonymous, voluntary and unpaid survey. The survey consisted of 10 fictitious clinical cases. A total of 68 responses were recorded. Data analysis revealed a low level of agreement between evaluators and a median of 50% correct responses, with the highest rate of correct responses on cases category ASA 3. The rate of correct answers was similar to that found in previous studies, although interobserver variability was higher. The clinical cases with the greatest discrepancy in responses were those related to acute pathologies and life-threatening emergencies. The consulted anesthesiologists propose a series of improvements in the definition, such as standardizing the scale by including the patient's current physical condition or frailty scales.


REFERENCES

  1. Yevenes S, Epulef V, Rocco C, Geisse F, Vial M. Clasificación American Society of Anesthesiologisth physical status: Revisión de ejemplos locales-Chile. Rev Chil Anest. 2022;51:251-260.

  2. Horvath B, Kloesel B, Todd MM, Cole DJ, Prielipp RC. the evolution, current value, and future of the American Society of Anesthesiologists physical status classification system. Anesthesiology. 2021;135:904-919.

  3. Mak PHK, Campbell RCH, Irwin MG. The ASA physical status classification: inter-observer consistency. Anaesth Intensive Care. 2002;30:633-640.

  4. Schawm SJ, Gold MI. ASA PS classification is not risk classification. Anesthesiology. 1982;57:68.

  5. Owens WD. American Society of Anesthesiologists physical status classification system is not a risk classification system. Anesthesiology. 2001;94:378.

  6. Doyle DJ, Hendrix JM, Garmon EH. American Society of Anesthesiologists Classification. In StatPearls. 2023.

  7. American Society of Anesthesiologists (n.d.). Statement on ASA physical status classification system. Retrieved April 1, 2024. Available in: https://www.asahq.org/standards-and-practice-parameters/statement-on-asa physical-status-classification-system

  8. Hopkins TJ, Raghunathan K, Barbeito A, Cooter M, Stafford-Smith M, Schroeder R, et al. Associations between ASA Physical Status and postoperative mortality at 48 h: a contemporary dataset analysis compared to a historical cohort. Perioper Med. 2016;5:29.

  9. Hackett NJ, De Oliveira GS, Jain UK, Kim JY. ASA class is a reliable independent predictor of medical complications and mortality following surgery. Int J Surg. 2015;18:184-190.

  10. Sankar A, Johnson SR, Beattie WS, Tait G, Wijeysundera DN. Reliability of the American Society of Anesthesiologists physical status scale in clinical practice. Br J Anaesth. 2014;113:424-432.

  11. Mayhew D, Mendonca V, Murthy BVS. A review of ASA physical status-historical perspectives and modern developments. Anaesthesia. 2019;74:373-379.

  12. Burgoyne LL, Smeltzer MP, Pereiras LA, Norris AL, Armendi AJD. How well do pediatric anesthesiologists agree when assigning ASA physical status classifications to their patients? Pediatr Anesth. 2007;17:956-962.

  13. Knuf M, Maani CV, Cummings AK. Clinical agreement in the American Society of Anesthesiologists physical status classification. Perioper Med. 2018;7:1-6.

  14. Knuf KM, Manohar CM, Cummings AK. Addressing inter-rater variability in the ASA-PS classification system. Mil Med. 2020;185:e545-e549.

  15. Owens WD, Felts JA, Spitznagel Jr EL. ASA physical status classifications: a study of consistency of ratings. Anesthesiology. 1978;49:239-243.

  16. Riley RH, Holman CDJ, Fletcher DR. Inter-rater reliability of the ASA physical status classification in a sample of anaesthetists in Western Australia. Anaesth Intensive Care. 2014;42:614-618.

  17. Cuvillon P, Nouvellon E, Marret E, Albaladejo P, Fortier LP, Fabbro-Perray P, et al. American Society of Anesthesiologists' physical status system: a multicentre Francophone study to analyse reasons for classification disagreement. Eur J Anaesthesiol. 2011;28:742-747.

  18. Curatolo C, Goldberg A, Maerz D, Lin HM, Shah H, Trinh M. ASA physical status assignment by non-anesthesia providers: Do surgeons consistently downgrade the ASA score preoperatively? J Clin Anesth. 2017;38:123-128.

  19. Abouleish AE, Vinta SR, Shabot SM, Patel NV, Hurwitz EE, Krishnamurthy P, et al. Improving agreement of ASA physical status class between pre-anesthesia screening and day of surgery by adding institutional-specific and ASA-approved examples: a quality improvement project. Perioper Med. 2020; 9:1-12.

  20. Bhattarai AS, Bista NR, Basnet MB, Joshi DR, Shrestha A. Interrater Variability among Anaesthesiologists Using American Society of Anesthesiologists Physical Status Classification System. J Nepal Health Res Counc. 2023;21:543-549.

  21. Pedrosa E, Silva M, Lobo A, Barbosa J, Mourao J. Is the ASA Classification Universal? Turk J Anaesthesiol Reanim. 2021;49:298-303.

  22. Ranta S, Hynynen M, Tammisto T. A survey of the ASA physical status classification: significant variation in allocation among Finnish anaesthesiologists. Acta Anaesthesiol Scand. 1997;41:629-632.

  23. De Cassai A, Boscolo A, Tonetti T, Ban I, Ori C. Assignment of ASA-physical status relates to anesthesiologists' experience: a survey-based national-study. Korean J Anesthesiol. 2019;72:53-59.

  24. Hurwitz EE, Simon M, Vinta SR, Zehm CF, Shabot SM, Minhajuddin A, et al. Adding Examples to the ASA-Physical Status Classification Improves Correct Assignment to Patients. Anesthesiology. 2017;126:614-622.




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Rev Mex Anest. 2026;49