European journal of anaesthesiology
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Both skin conductance and surgical stress index have been proposed as useful means of assessing pain. Both methods are based on the assessment of the sympathovagal balance, which, according to reports, is influenced by age and sex, and currently neither of the assessments take these factors into account. The aim of this study was to determine the relationship between age, sex, magnitude of acute post-operative pain and haemodynamic and autonomic changes. ⋯ Acute pain influences the sympathovagal balance. This response is significantly influenced by age and sex.