About this trial
Ophthalmology physicians and residents work under stress conditions during night emergency ophthalmology shifts. Under time pressure, that is a characteristic of the urgency of care, they must use all their cognitive resources to make an accurate diagnosis and to provide accurate decisions, with sometimes surgical emergency acts. In addition, in France, they work at night following by an usual day work, and they can also work 48 consecutive hours during weekends, followed by a work day … i.e. 60 consecutive hours of work … Long working hours with a short recovery time has been demonstrated to be a major factor of stress and fatigue. Even if not demonstrated on ophthalmologists, those working conditions may contribute to symptoms of mental exhaustion and physical fatigue (sleep deprivation), often accompanied by a loss of motivation at work. This may leads to a feeling of loss of time control; stress can also distort the perception of time and leads to hasty actions or delayed decision-making. The combined effects of stress, feelings of loss of time control, and fatigue necessarily have an impact on work performance and work quality, with a high risk of medical error. Moreover, prolonged stress may expose ophthalmologists to a higher risk of multiple diseases, predominantly systemic inflammation and coronary heart disease.
The main hypothesis is that prolonged work (up to 60 consecutive working hours) may impact on HRV, comparatively to a typical working day.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Ophthalmologists defined as physicians who completed the ophthalmology DES (Specialized studies diploma), as well as ophthalmology residents defined as a resident registered in the ophthalmology DES working during the inclusion period in the ophthalmology department of the university hospital center of Clermont-Ferrand.
Ability to give a written informed consent to participate in research.
Affiliation to a social security system.
Age between 18 and 65 years old
Disqualifiers
Participant refusal to participate
Children under the age of 18, pregnant and breastfeeding women, protected adults (individuals under guardianship by court order), adults deprived of their liberty.
Trial design
Single group
Treatments tested in this trial
Impact of prolonged work
BehavioralEvaluate the impact of prolonged work (up to 60 consecutive hours) on the surgical capacities evaluated on a simulator, as well as on stress markers (questionnaires, saliva assays, skin conductance, quality of sleep) compared to a standard day.
Treatment groups
Trial outcomes
Primary outcomes
Heart rate variability
HRV will be explored in time and frequency domains Abrupt changes in HRV signals will be explored.
Secondary outcomes
change in stress levels
measure of stress using visual analogue scale of 100 mm, from 0 to 100. Higher scores mean a worse outcome level.
change in stress levels
measure of stress using visual analogue scale of 100 mm, from 0 to 100. Higher scores mean a worse outcome level.
change in fatigue levels
measure of fatigue using visual analogue scale of 100 mm, from 0 to 100. Higher scores mean a worse outcome level.
change in fatigue levels
measure of fatigue using visual analogue scale of 100 mm, from 0 to 100. Higher scores mean a worse outcome level.
Sponsors and contacts
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University Hospital, Clermont-Ferrand
Lead sponsor
University Clermont Auvergne (UCA), Clermont-Ferrand, France
Collaborator
LaPSCO laboratory, UMR CNRS 6024, Clermont-Ferrand, France
Collaborator