Looks can be deceiving: Gaze pattern differences between novices and experts during placement of central lines

Hong En Chen, Cheyenne C. Sonntag, David F. Pepley, Rohan S. Prabhu, David C. Han, Jason Z. Moore, Scarlett R. Miller

Research output: Contribution to journalArticle


Background: The objective of this study was to determine whether gaze patterns could differentiate expertise during simulated ultrasound-guided Internal Jugular Central Venous Catheterization (US-IJCVC) and if expert gazes were different between simulators of varying functional and structural fidelity. Methods: A 2017 study compared eye gaze patterns of expert surgeons (n = 11), senior residents (n = 4), and novices (n = 7) during CVC needle insertions using the dynamic haptic robotic trainer (DHRT), a system which simulates US-IJCVC. Expert gaze patterns were also compared between a manikin and the DHRT. Results: Expert gaze patterns were consistent between the manikin and DHRT environments (p = 0.401). On the DHRT system, CVC experience significantly impacted the percent of time participants spent gazing at the ultrasound screen (p < 0.0005) and the needle and ultrasound probe (p < 0.0005). Conclusion: Gaze patterns differentiate expertise during ultrasound-guided IJCVC placement and the fidelity of the simulator does not impact gaze patterns.

Original languageEnglish (US)
Pages (from-to)362-367
Number of pages6
JournalAmerican Journal of Surgery
Issue number2
StatePublished - Feb 2019


All Science Journal Classification (ASJC) codes

  • Surgery

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