The effect of divided attention on novices and experts in laparoscopic task performance

Mudassar Ali Ghazanfar (Lead / Corresponding author), Malcolm Cook, Benjie Tang, Iain Tait, Afshin Alijani

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Background Attention is important for the skilful execution of surgery. The surgeon’s attention during surgery is divided between surgery and outside distractions. The effect of this divided attention has not been well studied previously. We aimed to compare the effect of dividing attention of novices and experts on a laparoscopic task performance.
Methods Following ethical approval, 25 novices and 9 expert surgeons performed a standardised peg transfer task in a laboratory setup under three randomly assigned conditions: silent as control condition and two standardised auditory distracting tasks requiring response (easy and difficult) as study conditions. Human reliability assessment was used for surgical task analysis. Primary outcome measures were correct auditory responses, task time, number of surgical errors and instrument movements. Secondary outcome measures included error rate, error probability and hand specific differences. Non-parametric statistics were used for data analysis.
Results
21109 movements and 9036 total errors were analysed. Novices had increased mean task completion time (seconds) (171 ± 44SD vs. 149 ± 34, p < 0.05), number of total movements (227 ± 27 vs. 213 ± 26, p < 0.05) and number of errors (127 ± 51 vs. 96 ± 28, p < 0.05) during difficult study conditions compared to control. The correct responses to auditory stimuli were less frequent in experts (68 %) compared to novices (80 %). There was a positive correlation between error rate and error probability in novices (r2 = 0.533, p < 0.05) but not in experts (r2 = 0.346, p > 0.05).
Conclusion Divided attention conditions in theatre environment require careful consideration during surgical training as the junior surgeons are less able to focus their attention during these conditions.
Original languageEnglish
Pages (from-to)614-619
Number of pages6
JournalSurgical Endoscopy
Volume29
Issue number3
Early online date17 Jul 2014
DOIs
Publication statusPublished - Mar 2015

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Task Performance and Analysis
Outcome Assessment (Health Care)
Medical Errors
Nonparametric Statistics
Surgical Instruments
Hand
Surgeons

Cite this

Ghazanfar, Mudassar Ali ; Cook, Malcolm ; Tang, Benjie ; Tait, Iain ; Alijani, Afshin. / The effect of divided attention on novices and experts in laparoscopic task performance. In: Surgical Endoscopy. 2015 ; Vol. 29, No. 3. pp. 614-619.
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The effect of divided attention on novices and experts in laparoscopic task performance. / Ghazanfar, Mudassar Ali (Lead / Corresponding author); Cook, Malcolm; Tang, Benjie; Tait, Iain; Alijani, Afshin.

In: Surgical Endoscopy, Vol. 29, No. 3, 03.2015, p. 614-619.

Research output: Contribution to journalArticle

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N2 - Background Attention is important for the skilful execution of surgery. The surgeon’s attention during surgery is divided between surgery and outside distractions. The effect of this divided attention has not been well studied previously. We aimed to compare the effect of dividing attention of novices and experts on a laparoscopic task performance.Methods Following ethical approval, 25 novices and 9 expert surgeons performed a standardised peg transfer task in a laboratory setup under three randomly assigned conditions: silent as control condition and two standardised auditory distracting tasks requiring response (easy and difficult) as study conditions. Human reliability assessment was used for surgical task analysis. Primary outcome measures were correct auditory responses, task time, number of surgical errors and instrument movements. Secondary outcome measures included error rate, error probability and hand specific differences. Non-parametric statistics were used for data analysis.Results 21109 movements and 9036 total errors were analysed. Novices had increased mean task completion time (seconds) (171 ± 44SD vs. 149 ± 34, p < 0.05), number of total movements (227 ± 27 vs. 213 ± 26, p < 0.05) and number of errors (127 ± 51 vs. 96 ± 28, p < 0.05) during difficult study conditions compared to control. The correct responses to auditory stimuli were less frequent in experts (68 %) compared to novices (80 %). There was a positive correlation between error rate and error probability in novices (r2 = 0.533, p < 0.05) but not in experts (r2 = 0.346, p > 0.05). Conclusion Divided attention conditions in theatre environment require careful consideration during surgical training as the junior surgeons are less able to focus their attention during these conditions.

AB - Background Attention is important for the skilful execution of surgery. The surgeon’s attention during surgery is divided between surgery and outside distractions. The effect of this divided attention has not been well studied previously. We aimed to compare the effect of dividing attention of novices and experts on a laparoscopic task performance.Methods Following ethical approval, 25 novices and 9 expert surgeons performed a standardised peg transfer task in a laboratory setup under three randomly assigned conditions: silent as control condition and two standardised auditory distracting tasks requiring response (easy and difficult) as study conditions. Human reliability assessment was used for surgical task analysis. Primary outcome measures were correct auditory responses, task time, number of surgical errors and instrument movements. Secondary outcome measures included error rate, error probability and hand specific differences. Non-parametric statistics were used for data analysis.Results 21109 movements and 9036 total errors were analysed. Novices had increased mean task completion time (seconds) (171 ± 44SD vs. 149 ± 34, p < 0.05), number of total movements (227 ± 27 vs. 213 ± 26, p < 0.05) and number of errors (127 ± 51 vs. 96 ± 28, p < 0.05) during difficult study conditions compared to control. The correct responses to auditory stimuli were less frequent in experts (68 %) compared to novices (80 %). There was a positive correlation between error rate and error probability in novices (r2 = 0.533, p < 0.05) but not in experts (r2 = 0.346, p > 0.05). Conclusion Divided attention conditions in theatre environment require careful consideration during surgical training as the junior surgeons are less able to focus their attention during these conditions.

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