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Biochemical Changes in Two Subjects Succumbing to Syncope
Abstract
Biochemical data are presented of two subjects who fainted during a psychophysiologic experiment. Both subjects showed similar postfaint reactions for heart rate, noradrenaline, glucose, human growth hormone, and cortisol. Heart rates showed rather low values, returning to the normal range after about 45 min. Noradrenaline plasma levels were also very low. However, levels of human growth hormone, cortisol, and glucose were very high in comparison to the control values. Taking into account psychologic prefaint data of previous studies and the present biochemical findings, it is argued that the onset of fainting involves the rapid succession of two stress reactions: the fight--flight reaction and the conservation--withdrawal reaction.
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In one case study, Vingerhoets observed spontaneous fainting during repeated blood draws; adrenaline and noradrenaline increased before syncope and decreased after, with increases in cortisol from pre- to post-syncope.
“In one case study of a participant with fainting history in the medical context, Vingerhoets (1984) observed spontaneous fainting during a protocol of repeated blood draws. Adrenaline and noradrenaline increased before syncope and decreased after it, with increases in cortisol from pre- to post-syncope also evident.”
From The psychophysiology of blood-injection-injury phobia: Looking beyond the diphasic response paradigm (2010) · cites this paper as Vingerhoets (1984)
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The origin of vasovagal syncope: to protect the heart or to escape predation?
Alboni, P., Alboni, M., & Bertorelle, G. (2008) · Clinical Autonomic Research · doi:10.1007/s10286-008-0479-7 · Cited by 93
The psychophysiology of blood-injection-injury phobia: Looking beyond the diphasic response paradigm
Ritz, T., Meuret, A. E., & Ayala, E. S. (2010) · International Journal of Psychophysiology · doi:10.1016/j.ijpsycho.2010.05.007 · Cited by 74
“[PubMed: 18765268] Vingerhoets AJ, 1984 Biochemical changes in two subjects succumbing to syncope.”
Background
Metadata
- Authors
- Vlngerhoets, A. J. J. M.
- Corresponding author
- Vlngerhoets, A. J.J.M.
- Venue
- Psychosomatic Medicine
- Published
- 1984-03
- Volume
- 46
- Issue
- 2
- Pages
- 95-103
- ISSN
- 0033-3174 (ISSN-L)
- OpenAlex
- W2316074279
- Cited by
- 69
- References
- 0
- Citations by year
- 2014: 1 · 2012: 1
- FWCI
- 1.38
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Psychosomatic Medicine (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Syncope and Autonomic Disorders
- Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
- Health Sciences › Medicine › Psychiatry and Mental health › Psychosomatic Disorders and Their Treatments
- Keywords
- syncope, heart rate, norepinephrine, plasma glucose, human growth hormone, cortisol, stress reactions
- MeSH terms
- Adult, Arousal, Blood Glucose, Cholesterol, Electrocardiography, Eosinophils, Epinephrine, Humans, Hydrocortisone, Leukocyte Count, Male, Norepinephrine, Growth Hormone, Stress, Psychological, Syncope, Testosterone, Triglycerides
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