Sleep and Breathing in Recreational Climbers at an Altitude of 4200 and 6400 Meters: Observational Study of Sleep and Patterning of Respiration During Sleep in a Group of Recreational Climbers

Sleep & Breathing = Schlaf & Atmung
Nikolaus C. Netzer, Kingman P. Strohl

Abstract

Background: The increasing popularity of mountain climbing will result in greater numbers of the general population being at risk for the disturbances known to occur with altitude exposure. Methods: Observations of sleep and breathing were made in 6 healthy travellers (5 males and 1 female, 38 to 62 years of age) before, during, and after a recreational climb. We modified a portable seven channel polygraph to record sleep state, oxygen saturation, respiratory movements, body position, and oronasal airflow 4 weeks prior to the expedition at home (500m), at base camp (4200m) and in 3 climbers at 6400m. All had a repeat study at 500m altitude 4 weeks after the expedition. Results: For the group, the total number of obstructive apneas and hypopneas (OA/H) at night increased from 36 at home to 68 at base camp over a one night recording. Separately counted central apneas and hypopneas (CA/CS) increased from 6.7 to 45. In one climber, who had a history of recurrent snoring and observed apneas at home, the number of apneas increased from 201 at 4200m to 322 at 6400m, whereas in 2 climbers measured at 6400m, all apneas decreased. The total sleep time (TST) increased in all 6 climbers by 10% at base camp in comparison to home records. In...Continue Reading

References

May 1, 1975·Electroencephalography and Clinical Neurophysiology·M ReiteJ V Weil
Mar 1, 1977·The Journal of Physiology·J R Pappenheimer
Apr 1, 1992·The American Review of Respiratory Disease·J D AnholmA Cymerman
Mar 1, 1985·Electroencephalography and Clinical Neurophysiology·T P FinneganT B Docherty
May 1, 1967·Respiration Physiology·J S Milledge, S Lahiri
Jan 1, 1981·Reviews of Physiology, Biochemistry and Pharmacology·M E Schlaefke
Feb 18, 1982·Brain Research·S LahiriA Mokashi
Apr 29, 1993·The New England Journal of Medicine·T YoungS Badr
Dec 1, 1995·Sleep·J J Askenasy, R Goldstein
Jun 15, 1909·The Journal of Physiology·C G Douglas, J S Haldane

❮ Previous
Next ❯

Citations

Oct 20, 2012·Sleep & Breathing = Schlaf & Atmung·Motoo YamauchiHiroshi Kimura
Jan 21, 2006·Respirology : Official Journal of the Asian Pacific Society of Respirology·Keith R BurgessAllan Hahn
Jul 22, 2004·High Altitude Medicine & Biology·John V Weil
Sep 25, 2009·High Altitude Medicine & Biology·Luca PomidoriAnnalisa Cogo
Jun 1, 2013·Respiratory Physiology & Neurobiology·Philip N AinslieKeith R Burgess
Jul 3, 2013·Journal of Travel Medicine·Nikolaus NetzerMartin Burtscher
Jun 7, 2005·Primary Care·Mark E Dyken, Thoru Yamada
Jun 25, 2009·European Archives of Oto-rhino-laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery·Cemal CingiGerhard Rettinger
Mar 26, 2016·The Open Cardiovascular Medicine Journal·Aibek E Mirrakhimov, Kingman P Strohl
Aug 24, 2011·Expert Review of Respiratory Medicine·Robert Thurnheer
Nov 5, 2011·Journal of Applied Physiology·Sanar S YokhanaJason H Mateika
Jun 1, 2014·Sleep Science·Maria Angelica Bazurto ZapataCarlos Torres Duque

❮ Previous
Next ❯

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.