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The Relationship Between Technical Skills, Cognitive Workload, and Errors During Robotic Surgical Exercises.

Sidney I Roberts1, Steven Y Cen2, Jessica H Nguyen1

  • 1Catherine and Joseph Aresty Department of Urology, Center for Robotic Simulation and Education, USC Institute of Urology, University of Southern California, Los Angeles, California, USA.

Journal of Endourology
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Surgeons

Keywords:
cognitive workloadroboticssurgeon performancesurgical errorstechnical skills

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Area of Science:

  • Robotic surgery
  • Surgical simulation
  • Human factors in medicine

Background:

  • Assessing surgeon technical skills is crucial for patient safety.
  • Cognitive workload impacts surgical performance and error rates.
  • Understanding the interplay between skills, workload, and errors in robotic surgery is essential.

Purpose of the Study:

  • To investigate the relationship between surgeon technical skills, cognitive workload, and errors in a simulated robotic dissection task.
  • To determine how surgical experience influences these relationships.
  • To identify optimal cognitive workload levels for robotic surgical performance.

Main Methods:

  • Participants performed a simulated robotic surgery dissection task.
  • Technical skills were assessed using the Global Evaluative Assessment of Robotic Skills (GEARS).
  • Cognitive workload was measured via task-evoked pupillary response (index of cognitive activity, ICA).
  • Generalized estimating equations (GEE) were used for statistical analysis.

Main Results:

  • Higher GEARS scores (technical skill) were strongly associated with fewer passive errors (p < 0.01).
  • Novice surgeons showed decreased cognitive activity (ICA) with increased technical skill.
  • Expert surgeons showed increased cognitive activity (ICA) with increased technical skill.
  • Optimal technical skill resulted in similar ICA ranges for novices and experts (0.47 and 0.42).

Conclusions:

  • Specific technical skill domains predict errors in robotic surgery.
  • An optimal cognitive workload level exists for surgeons across experience levels during simulated tasks.
  • Future research should explore if this optimal cognitive workload range enhances surgical training and reduces errors.