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| ID | Type | Description | Link |
|---|---|---|---|
| ID-RCB | Other Identifier | 2025-A01518-41 |
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Sleep organization and cardiorespiratory parameters are disrupted in extreme conditions such as high altitude. The pathophysiology of medical problems related to acute high-altitude exposure is partially understood, but sleep quality indicators are very rarely measured under these conditions. This lack of information is even more pronounced among employees subjected to cyclical exposure to high-altitude hypoxic stress, as is the case for the employees at the Pic du Midi. These 32 employees regularly report to their occupational physician difficulties in managing their sleep disorders, struggling to distinguish symptoms from objective changes in their sleep cycles. Among them, 13 are on call at the summit of the Pic du Midi (2,877 m), while 19 work there during the day and return home to a lower altitude at night to sleep. The investigators also wish to measure structural changes in sleep and its cardiorespiratory parameters using polysomnography in these 13 employees, comparing nights spent at home at normal altitude with those spent at the summit of the Pic du Midi. These changes will also be compared to those of a group of 19 employees who do not sleep at high altitude..
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| group with overnight on-call duty at high altitude at the Pic du Midi | Experimental | employees of the Pic du Midi who spend the night at high altitude |
|
| group without night duty at high altitude | Active Comparator | employees of the Pic du Midi who spend the night at home in the plain |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Sleep recording | Other | Polysomnography and questionnaires. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Comparison of sleep efficiency (total sleep time / total sleep period) under high altitude conditions (at 2877 m) versus without increased altitude (at home) | Sleep efficiency will be compared, according to the ratio = total sleep time (TST)/ total sleep period (PTS) calculated from a polysomnographic recording, between the night spent at high altitude (2877m, at PIC du MIDI) and the second night spent at home (not increased altitude) among PIC du MIDI employees performing on-call nights at high altitude. | 1 week after the inclusion |
| Measure | Description | Time Frame |
|---|---|---|
| Comparison of sleep parameters in high altitude conditions versus without increased altitude for the group "with on-call night at high altitude at Pic du Midi" | Sleep parameters (determined according to the criteria of the American Academy of Sleep Medicine (AASM)) measured from a polysomnographic recording will be compared in high altitude conditions versus without increased altitude. | 1 week after the inclusion |
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Inclusion Criteria:
Group "with on-call night at high altitude at the Pic du Midi":
Night group "without on-call night at high altitude":
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Rachel DEBS, MD | Contact | 05 61 77 94 88 | + 33 | debs.r@chu-toulouse.fr |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Unité du sommeil, Hôpital Pierre Paul Riquet, 1 place du Docteur Baylac | Recruiting | Toulouse | Oui | 31059 | France |
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| Measurement of sleep parameters in low altitude conditions for the group "without on-call nights at high altitude" | Sleep parameters (determined according to the criteria of the American Academy of Sleep Medicine (AASM)) will be measured from a polysomnographic recording under conditions without altitude gain. | 1 week after the inclusion |
| Evaluation of the relationship between sleep quantification criteria and sleep disorder criteria | Comparison of questionnaire responses and polysomnographic recording | 1 week after the inclusion |
| Correlation between cardiac parameters and sleep efficiency. | Correlation between heart rate variability and sleep efficiency using polysomnography recording | 1 week after the inclusion |
| Comparison of sleep parameters, in conditions without increased altitude, between the 2 groups of participants | Comparison of sleep parameters (determined according to the criteria of the American Academy of Sleep Medicine (AASM)) from the polysomnography recording between the two groups in conditions without increased altitude | 1 week after the inclusion |
| ID | Term |
|---|---|
| D012893 | Sleep Wake Disorders |
| D000532 | Altitude Sickness |
| ID | Term |
|---|---|
| D009422 | Nervous System Diseases |
| D009461 | Neurologic Manifestations |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D001523 | Mental Disorders |
| D012120 | Respiration Disorders |
| D012140 | Respiratory Tract Diseases |
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