Sleep respiratory disturbances during the ascent to Mount Aconcagua

INTRODUCTION: Mountaineers exposed to hypobaric hypoxia (HH) show high-altitude periodic breathing (PB). OBJECTIVE: To analyze high-altitude PB during the ascent of Mount Aconcagua (Argentina). MATERIALS AND METHODS: Descriptive study in healthy volunteers using respiratory polygraphy (RP) at differ...

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Detalles Bibliográficos
Autores principales: Ortiz-Naretto, Alvaro Emilio, Pereiro, Miriam Patricia, Ernst, Glenda, Borsini, Eduardo Enrique
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Brazilian Association of Sleep and Latin American Federation of Sleep 2018
Materias:
Short Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5916571/
https://www.ncbi.nlm.nih.gov/pubmed/29796196
http://dx.doi.org/10.5935/1984-0063.20180005
Descripción
Sumario:INTRODUCTION: Mountaineers exposed to hypobaric hypoxia (HH) show high-altitude periodic breathing (PB). OBJECTIVE: To analyze high-altitude PB during the ascent of Mount Aconcagua (Argentina). MATERIALS AND METHODS: Descriptive study in healthy volunteers using respiratory polygraphy (RP) at different altitudes. RESULTS: We studied 8 andinist, mean age: 36 years old (25-51), body mass index (BMI) of 23.6 (20.9-28.7) and 22.77 (20.9-27.7) upon return, p<0.01. RP without PB showed a lower Oxygen Desaturation Index (ODI) and a lower Apnea-Hypopnea-Index (AHI); 5.43 (0 - 20) versus 45.95 (2-122) p<0.001 and 3.9 (0-15.5) versus 44.35 (4-115) p<0.001. AHI increased with altitude at the expense of central apneas and hypopneas: p<0.05. CONCLUSION: High-altitude PB is frequent above 2,581m.a.s.l. And it is characterized by short cycles. None of the mountaineers showed PB at baseline; however, high-altitude PB occurred in all subjects above 4,900 m.a.s.l

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