Cognitive modeling of intraoperative critical events

Yasser A. Sowb, Robert G. Loeb, Emilie M. Roth

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


Ventilation-related events (VRE) constitute a significant percentage of serious anesthesia mishaps. VRE occur as a result of mismatches between clinicians' resources and the cognitive demands during difficult situations. In this study, we used several Cognitive Task Analysis (CTA) techniques to probe how clinicians think about respiratory function in order to investigate the cognitive challenges of assessing patient ventilation status. The results were used to build two models of the respiratory system that were used to map the cognitive demands imposed on clinicians during VRE. Results of the study were later used to guide the design of a simulator study to investigate clinicians' response to VRE and the role of current equipment in supporting clinical decision making. In this paper, we describe the different CTA techniques used in our study and their usefulness in developing these models. We also present one of the models used in our study to illustrate our analysis and its results.

Original languageEnglish (US)
Pages (from-to)2533-2538
Number of pages6
JournalProceedings of the IEEE International Conference on Systems, Man and Cybernetics
StatePublished - 1998
Externally publishedYes
EventProceedings of the 1998 IEEE International Conference on Systems, Man, and Cybernetics. Part 3 (of 5) - San Diego, CA, USA
Duration: Oct 11 1998Oct 14 1998

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Hardware and Architecture


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