نتایج جستجو برای: altitude effects
تعداد نتایج: 1562792 فیلتر نتایج به سال:
Altitude contributes to a wide variety of physiological changes within the body. Changes that disrupt the amount of oxygen delivered to the cells, altering the acid-base balance, resulting in abnormalities like skip breathing, hypercapnia and hypoxia. All issues that are uncommon breathing ambient air. As more and more adventurous thrillseeking individuals travel to high elevations, it becomes ...
INTRODUCTION Over-inflation of endotracheal tube (ETT) cuffs has the potential to lead to scarring and stenosis of the trachea.1, 2,3, 4 The air inside an ETT cuff is subject to expansion as atmospheric pressure decreases, as happens with an increase in altitude. Emergency medical services helicopters are not pressurized, thereby providing a good environment for studying the effects of altitude...
OBJECTIVE Prevalence of hypertension was examined in a widely dispersed (45 110 km(2)) representative group of Ladakhi in Northern India. The influence of hypoxic environment of wide-ranged altitude (2600-4900 m) and lifestyle change on hypertension was studied. METHODS 2800 participants (age 20-94 years) were enrolled. Systolic blood pressure ≥140 mm Hg and/or diastolic blood pressure of ≥90...
Data on physical growth were obtained for a sample of 1202 Quechua subjects, aged 2 to 35 years from the district of Nuiioa, Puno, located in the southe m highlands (altitude 4000-5500m) of Peru. These data were supplemented by a three-year longitudinal study of 300 subjects, aged 1 to 22 years. The patterns of physical growth of members of the indigenous population of Nufioa are characterized ...
AIMS We assessed the haemodynamic changes induced by exposure to high altitude hypoxia and the effects on them of acetazolamide, a drug prescribed to prevent and treat mountain sickness. METHODS AND RESULTS In 42 subjects (21 males, age 36.8 ± 8.9 years) randomized to double blind acetazolamide 250 mg b.i.d. or placebo, pulse wave velocity and pulse wave parameters were assessed (PulsePen) at...
OBJECTIVES We investigated the effect of high altitude on the match activity profile of elite youth high altitude and sea level residents. METHODS Twenty Sea Level (Australian) and 19 Altitude-resident (Bolivian) soccer players played five games, two near sea level (430 m) and three in La Paz (3600 m). Match activity profile was quantified via global positioning system with the peak 5 min per...
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