The validation of a sleep questionnaire (translated into French from a source questionnaire in English) will provide a reliable and easily administered tool for assessing sleep quality in intensive care, enabling better identification of patients at risk of sleep disorders and other associated complications, in particular ventilatory weaning difficulties.

Sleep disturbance in intensive care is influenced by a number of factors, such as environmental nuisances (noise, light, repeated interruptions), treatments (sedation, analgesia, mechanical ventilation) and the severity of the acute pathology that led to admission. Consequences include alterations to the immune system, neuropsychiatric disorders and impaired functional recovery.

Current management of these disorders remains limited:

• No pharmacological treatment has clearly demonstrated its efficacy on sleep quality in intensive care.
• Interventions aimed at modulating environmental nuisances (reducing noise, reducing light exposure, respecting day/night cycles) have shown limited effects.
• According to the available data, individual devices (eye masks, earplugs) have not significantly improved sleep architecture.

In this context, the Richards-Campbell questionnaire (RCSQ) represents an interesting alternative for subjectively assessing sleep in intensive care patients. This questionnaire, specifically designed for these patients, provides a simple and rapid assessment of sleep disturbances. The validation of a French version of the RCSQ meets a need to standardise assessment practices in France and to gain a better understanding of the factors influencing sleep quality in intensive care.

Inclusion Criteria:

• Patient aged ≥ 18 years
• Hospitalised in intensive care for at least 24 hours
• Able to understand and answer questionnaires
• Unsedated (discontinued for 24 hours) presenting a Richmond Sedation Agitation Scale score between ≥-2 and ≤ +1
• Fluent in French
• Having given oral consent for participation in the study
• Person affiliated to a social security scheme.

Exclusion Criteria:

• Patient refusal
• Person deprived of liberty by an administrative or judicial decision or protected adult subject (under guardianship or curatorship)
• Patient unable, for whatever reason, to read, understand or answer the questionnaires (visual problems, psychiatric or cognitive problems, etc.)
• Patient already included in the study or another study evaluating sleep

The RCSQ-F questionnaire will be distributed at the same time as the ISI and Epworth questionnaires to ICU patients who meet the inclusion and non-inclusion criteria and who have given their informed consent to participate in the study.

The questionnaires will be distributed on two occasions: at the first visit and on the day of discharge from intensive care.

The data provided will be the property of the sponsor and will be used solely for its own research activities.