• A Mishra, K Catchpole, T Dale, and P McCulloch.
• Nuffield Department of Surgery, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DU, UK. mishra007@hotmail.com
• Surg Endosc. 2008 Jan 1;22(1):68-73.

IntroductionEvidence from other professions suggests that training in teamwork and general cognitive abilities, collectively described as non-technical skills, may reduce accidents and errors. The relationship between non-technical teamwork skills and technical errors was studied using a behavioural marker system validated in aviation and adapted for use in surgery.Method26 elective laparoscopic cholecystectomies were observed. Simultaneous assessments were made of surgical technical errors, by observation clinical human reliability assessment (OCHRA) task analysis, and non-technical performance, using the surgical NOTECHS behavioural marker system. NOTECHS assesses four categories: (1) leadership and management, (2) teamwork cooperation, (3) problem-solving and decision-making, (4) situation awareness. Each subteam (nurses, surgeons and anaesthetists) was scored separately on each of the four dimensions. Two observers - one surgical trainee and one human factors expert - were used to assess intra-rater reliability.ResultsThe mean NOTECHS team score was 35.5 (95% C.I. +/- 1.88). The mean subteam scores for surgeons, anaesthetists and nurses were 13.3 (95% C.I. +/- 0.64), 11.4 (95% C.I. +/- 1.05), and 10.8 (95% C.I. +/- 0.87), respectively, with a significant difference between surgeons and anaesthetists (U = 197, p = 0.009), and surgeons and nurses (U = 0.134, p ConclusionsNon-technical skills are an important component of surgical skill, particularly in relation to the development and maintenance of a surgeon's situational awareness. Experience from other industries suggests that it may be possible to improve the ability of surgeons to manage their own situation awareness, through training, intraoperative briefings and intraoperative workload management. In the future, it may be possible to use non-technical performance as a surrogate measure for technical performance, either for early identification of surgical difficulties, or as a method of evaluation by which non-surgically trained observers.

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