Avaliação dos efeitos da altitude sobre a visão

Alves, Luiz Filipe de Albuquerque; Ribeiro, Alexandre Sampaio de Abreu; Brandão, Lívia Mello; Teixeira, Roberto de Almeida; Bisol, Tiago

doi:10.1590/s0034-72802008000500010

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…Vibrações extremas, disbarismo, hipóxia, ação das cargas de aceleração (Força G) e outros estressores ambientais são ocorrências frequentes, sobretudo, em voos acima de 15.000 pés (GÜL;SALMANOĞLU, 2012). Nesse segmento aéreo, o uso de oxigênio suplementar se faz necessário, além disso, o ambiente de cabine pode ocorrer com pressurização controlada e os efeitos relativos ao trabalho em altitude podem parecer mais evidentes (ALVES et al, 2008;GÜL;SALMANOĞLU, 2012;PETRASSI et al, 2012).…”

Section: Introductionunclassified

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Função pulmonar em pilotos de combate

Soares¹,

Melo²,

Sá³

2023

cmm

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The effects related to work at high altitudes and acceleration force overload can generate physiological compensation mechanisms and eventual short-, medium- and long-term changes in lung function. Therefore, this study aimed to describe the chronic changes in lung function in combat pilots of the Brazilian Air Force. The sample consisted of 19 combat pilots and 20 controls. For pulmonary function measurements, we observed an increase in the mean values of Forced Vital Capacity (FVC) and Forced Expiratory Volume in the First Second (FEV1), a decrease in lung volume, an increase in resistance and work of breathing, in the exposed group compared to the control, with significant modifications to Residual Volume (RV) by Total Lung Capacity (TLC) in liters (L) and percentage (%). Similar behavior when evaluated according to flight hours, with an increase proportional to the increase in exposure time. Discrete changes, such as those observed in this research, may reflect adaptations of the respiratory system, bringing a complementary view to changes in chronic conditions.

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Section: Introductionunclassified

“…É descrito na literatura que a redução da pressão do ar com o aumento da altitude leva à hipóxia, denominada também por hipóxia hipobárica (ALVES et al, 2008). A redução da pressão parcial de oxigênio alveolar reduz sua pressão no sangue arterial.…”

Section: Introductionunclassified

Função pulmonar em pilotos de combate

Soares¹,

Melo²,

Sá³

2023

cmm

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“…TUC is a parameter that can be determined experimentally in hypobaric chamber, through psychomotor tests. Studies have shown a reduction in TUC of about 50% when physical activity is performed [3]. TUC is slightly different between individuals but smoking is one factor that dramatically reduces the tolerance to lack of oxygen.…”

Section: Introductionmentioning

confidence: 99%

Physiological Factors Analysis in Unpressurized Aircraft Cabins

2016

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Amateur and sports flight is an activity with growing numbers worldwide. However, the main cause of flight incidents and accidents is increasingly pilot error, for a number of reasons. Fatigue, sleep issues and hypoxia, among many others, are some that can be avoided, or, at least, mitigated. This article describes the analysis of psychological and physiological parameters during flight in unpressurized aircraft cabins. It relates cerebral oximetry and heart rate with altitude, as well as with flight phase. The study of those parameters might give clues on which variations represent a warning sign to the pilot, thus preventing incidents and accidents due to human factors. Results show that both cerebral oximetry and heart rate change along the flight and altitude in the alert pilot. The impaired pilot might not reveal these variations and, if this is detected, he can be warned in time.

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Pilots Performance and Flight Safety: Flight Physiology in Unpressurized Aircraft Cabins

Patrão

Zorro

Marques

et al. 2015

JATS

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Light aviation pilots are exposed to many different environmental situations due to the unpressurised and unacclimatised aircraft cabins. Literature review suggests that a significant number of incidents and fatalities occurring within this type of aviation are related to human factor. This could be a worrying situation because of various psychophysiological reactions shown by different pilots under the same flight conditions. This study analyses the influence of the flight environmental conditions and the pilot’s psychophysiological parameters when performing tasks, and different flight situations, taking some of their everyday habits into consideration. A portable, ergonomic monitoring system was built for the purpose. This system records cerebral oximetry and atmospheric pressure in order to correlate the influence of altitude with the pilot’s physiological response in different stages of the flight. It was observed that physiological reactions such as hypoxia and stress, combined with the environmental conditions, can influence the pilot’s cognitive response.

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Avaliação dos efeitos da altitude sobre a visão

Cited by 3 publications

References 8 publications

Função pulmonar em pilotos de combate

Função pulmonar em pilotos de combate

Physiological Factors Analysis in Unpressurized Aircraft Cabins

Pilots Performance and Flight Safety: Flight Physiology in Unpressurized Aircraft Cabins

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