Key result
Fainting is linked to low HR and noradrenaline but high cortisol, glucose, and growth hormone.
Why the study?
The biochemical changes occurring during syncope in subjects undergoing psychophysiologic experiments were not well characterized.
Case Report (n=2)
Fainting may involve a rapid succession of fight-flight and conservation-withdrawal stress reactions, characterized by specific biochemical changes.
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Does not support changing syncope evaluation; hypothesis-generating for neuroendocrine patterns in vasovagal responses.
A. J.J.M. Vlngerhoets (1984) conducted a case report in Syncope (n=2). Syncope during a psychophysiologic experiment vs. Control values was evaluated on Biochemical changes (heart rate, noradrenaline, glucose, human growth hormone, and cortisol). Fainting during a psychophysiologic experiment was associated with low heart rate and noradrenaline, but high levels of human growth hormone, cortisol, and glucose compared to control values.
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