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Description
  • Pilot může být vystaven zátěži hypoxickou hypoxií při havarijní situaci za letu. Pro úspěšné dokončení letu je nezbytné zachování zraku. Jedním z důležitých předpokladů správné vizuální orientace za letu je dostatečná kontrastní citlivost zraku. Soubor 46 pilotů AČR byl podroben hypoxické zátěži na simulované výšce 25 000 ft v podtlakové komoře. Délka hypoxické expozice byla 5 minut. Vyšetření při zátěži bylo provedeno ve čtvrté minutě hypoxické zátěže. Kontrastní citlivost byla vyšetřována využitím tabulek Vistech. U všech sledovaných pilotů došlo při zátěži ke zhoršení kontrastní citlivosti o jeden stupeň jasového profilu alespoň na jedné frekvenci. Bylo provedeno porovnání kontrastní citlivosti s hodnotami saturace periferního oxyhemoglobinu (%SpO2 ). Výsledky potvrdily vysokou korelaci mezi snížením saturace periferního oxyhemoglobinu a snížením kontrastní citlivosti zraku. Kontrastní citlivost se podstatně zhoršuje na všech frekvencích při hypoxické hypoxii na výšce 25000 ft. (cs)
  • Pilot can be exposed to the hypoxia load during critical phase of flight. His ability to keep vision is essential for successful finishing the flight. Correct contrast sensitivity is an important condition of correct visual space orientation. A group of 46 Czech Air Force pilots were exposed to the hypoxic load in a hypobaric chamber at the simulated altitude of 25 000 ft. Duration of the hypoxic load was 5 min. Load examinations were accomplished at the 4th minute. Contrast sensitivity was examined by using Vistech examination tables. Hypoxic contrast sensitivity examination of all pilots showed impairment of results at one frequency at least. The relation between contrast sensitivity and the value of saturation of peripheral oxyhaemoglobin (% SpO2) was compared. Results confirm high rate of correlation between decreasing of the value of % SpO2 and decreasing contrast sensitivity of vision. Contrast sensitivity is impaired significantly at all frequencies by hypoxic hypoxia at the level of 25000 ft.
  • Pilot can be exposed to the hypoxia load during critical phase of flight. His ability to keep vision is essential for successful finishing the flight. Correct contrast sensitivity is an important condition of correct visual space orientation. A group of 46 Czech Air Force pilots were exposed to the hypoxic load in a hypobaric chamber at the simulated altitude of 25 000 ft. Duration of the hypoxic load was 5 min. Load examinations were accomplished at the 4th minute. Contrast sensitivity was examined by using Vistech examination tables. Hypoxic contrast sensitivity examination of all pilots showed impairment of results at one frequency at least. The relation between contrast sensitivity and the value of saturation of peripheral oxyhaemoglobin (% SpO2) was compared. Results confirm high rate of correlation between decreasing of the value of % SpO2 and decreasing contrast sensitivity of vision. Contrast sensitivity is impaired significantly at all frequencies by hypoxic hypoxia at the level of 25000 ft. (en)
Title
  • The Influence of Hypobaric Hypoxia on Contrast Sensitivity of Czech Air Force Pilots.
  • The Influence of Hypobaric Hypoxia on Contrast Sensitivity of Czech Air Force Pilots. (en)
  • Vliv hypobarické hypoxie na kontrastní citlivost zraku u českých vojenských pilotů (cs)
skos:prefLabel
  • The Influence of Hypobaric Hypoxia on Contrast Sensitivity of Czech Air Force Pilots.
  • The Influence of Hypobaric Hypoxia on Contrast Sensitivity of Czech Air Force Pilots. (en)
  • Vliv hypobarické hypoxie na kontrastní citlivost zraku u českých vojenských pilotů (cs)
skos:notation
  • RIV/61382981:_____/04:ULZHA005!RIV/2005/MO0/G06005/N
http://linked.open.../vavai/riv/strany
  • 67-67
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(MO0990800X001)
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 567894
http://linked.open...ai/riv/idVysledku
  • RIV/61382981:_____/04:ULZHA005
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Hypoxia load, contrast sensitivity, air visibility, visual space orientation, Vistech examination tables, saturation of peripheral oxyhaemoglobin (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [9DA5A74EAD4D]
http://linked.open...v/mistoKonaniAkce
  • Sun City
http://linked.open...i/riv/mistoVydani
  • Sun City, South Africa
http://linked.open...i/riv/nazevZdroje
  • Proceedings of 52nd Intenational Congress of Aviation Medicine
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Došel, Petr
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
http://linked.open...n/vavai/riv/zamer
number of pages
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  • The South Africa Society of Aerospace Medicine
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