Wilderness & environmental medicine
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Wilderness Environ Med · Jan 2004
Randomized Controlled Trial Multicenter Study Clinical TrialEfficacy of a jellyfish sting inhibitor in preventing jellyfish stings in normal volunteers.
To evaluate the protective effects of a jellyfish sting inhibitor formulated in sunscreen lotion vs conventional sunscreen against Chrysaora fuscescens and Chiropsalmus quadrumanus jellyfish. ⋯ The jellyfish sting inhibitor prevented sting symptoms of C. fuscescens jellyfish in 10 of 12 subjects and diminished the pain of the jellyfish sting in the remaining 2 subjects. The jellyfish sting inhibitor also inhibited the more severe sting of the C. quadrumanus jellyfish in the majority of subjects. The jellyfish sting inhibitor does not eliminate the sting from C. fuscescens or C. quadrumanus jellyfish but significantly reduces the frequency and severity of stings.
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Wilderness Environ Med · Jan 2003
Randomized Controlled Trial Clinical TrialLack of effect of Rhodiola or oxygenated water supplementation on hypoxemia and oxidative stress.
This study investigated the effects of 2 potentially "oxygen promoting" dietary supplements on hypoxia and oxidative stress at a simulated altitude of 4600 m. ⋯ The 2 dietary supplements investigated did not have a significant effect on blood oxygenation after 60 minutes of sedentary hypoxic exposure. Hypoxia-induced oxidative stress was observed in the control group only. Both supplements appeared not to increase oxidative stress and may decrease free radical formation after hypoxic exposure compared with the control.
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Wilderness Environ Med · May 1996
Randomized Controlled Trial Clinical TrialCardiorespiratory response to free suspension simulating the situation between fall and rescue in a rock climbing accident.
Many factors contribute to the risk of late death after successful rescue in a rock climbing accident. One factor may be hemodynamic and respiratory compromise by free suspension in a rope between fall and rescue. The risk probably results from using a chest harness alone or the combination of a chest harness and a sit harness. ⋯ The p value for all reported changes was <0.05. We conclude that free suspension in a chest harness leads to a dramatic impairment of hemodynamics and respiration. This may contribute to the risk of a fatal outcome if rescue is not timely.