Submission ID 90555

Poster Code HR-P-74
Title of Abstract Feasibility of polysomnography sleep study among high altitude acclimatized shift workers in an industrial setting at 5050 m
Abstract Submission Abstract Objective Very few studies have exploited the use of full overnight polysomnography (PSG) for high-altitude sleep studies. Published studies have been limited by small sample sizes, lower sleeping altitudes and lack of data from high-altitude workers. Here, we investigate the feasibility of using full PSG sleep studies among high-altitude acclimatized shift workers from an astronomical observatory, the Atacama Large Millimeter Array (ALMA) in the Atacama Desert in Northern Chile. Methods High-altitude acclimatized workers at ALMA Array Operations Site (AOS, 5050 m) typically spend a week of high-altitude shift work followed by another week of rest at or near sea level (~500 m). During the week of high-altitude shift work, workers sleep at the ALMA Operation Support Facility (OSF, 2900 m) and go to work at the AOS during the day. AOS workers were recruited for a full PSG assessment during their week of shift work at high-altitude. The sleep data were analysed using Michele Sleep Scoring System (MSS). Results We have successfully recruited a total of fifty-three high-altitude acclimatized workers (36.5±10.6 years old, male/female=36/17, body mass index=27.3±3.8kg/m2). Traditional sleep parameters such as total sleep time (TST), sleep efficiency (SE), wake after sleep onset (WASO), sleep onset latency (SOL), awakenings and periodic limb movement index were assessed and will be presented. Similarly, we will present results for sleep apnea indices (apnea-hypopnea index (AHI), central and obstructive sleep apnea indices (CSA, OSA), hypoxia burden (oxygen desaturation index (ODI) and TST below blood oxygen saturation 90% (TST90)) and sleep depth parameters (deep sleep, transitional sleep, drowsy awake and full wakefulness). Conclusion Gold-standard sleep assessments using full PSG are feasible in industrial settings at high-altitude. Preliminary analyses show that the sleep data from high-altitude are as high quality as in-home PSG and in-hospital PSG studies at lower altitude.
Please indicate who nominated you David Gugel Graduate Program Administrator Medical Science (MDSC) - GSE Cumming School of Medicine, University of Calgary
What Canadian Institutes of Health Research (CIHR) institute is your research most closely aligned? Circulatory and Respiratory Health
Neurosciences, Mental Health and Addiction
What Canadian Institutes of Health Research (CIHR) pillar of health research does your research fall under? Biomedical
PDF of abstract ICAM2023 - Feasibility of polysomnography sleep study at high altitude [FINAL].pdf
2023-01-15 at 03:06:15
Presenter and Author(s) Matiram Pun
Bradley Hansen
Ivan Lopez
Marc Poulin

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