Orthostatic intolerance after space flight
نویسندگان
چکیده
منابع مشابه
Orthostatic intolerance and motion sickness after parabolic flight.
Because it is not clear that the induction of orthostatic intolerance in returning astronauts always requires prolonged exposure to microgravity, we investigated orthostatic tolerance and autonomic cardiovascular function in 16 healthy subjects before and after the brief micro- and hypergravity of parabolic flight. Concomitantly, we investigated the effect of parabolic flight-induced vomiting o...
متن کاملArtificial gravity: a possible countermeasure for post-flight orthostatic intolerance.
Four payload crewmembers were exposed to sustained linear acceleration in a centrifuge during the Neurolab (STS-90) flight. In contrast to previous studies, otolith-ocular reflexes were preserved during and after flight. This raised the possibility that artificial gravity may have acted as a countermeasure to the deconditioning of otolith-ocular reflexes. None of the astronauts who were centrif...
متن کاملImpairment of cerebral blood flow regulation in astronauts with orthostatic intolerance after flight.
BACKGROUND AND PURPOSE We investigated cerebral blood flow regulation in astronauts before and after flights. We hypothesized that autoregulation would be different before flight and after flight between nonfinishers and the finishers of a stand test. METHODS Twenty-seven astronauts from shuttle missions lasting 8 to 16 days underwent a 10-minute stand test: 10 days before flight, 1 to 2 hour...
متن کاملOrthostatic intolerance during early mobilization after fast-track hip arthroplasty.
BACKGROUND Early postoperative mobilization is a cornerstone in fast-track total hip arthroplasty (THA), but postoperative orthostatic intolerance (OI) may delay early recovery or lead to fainting, falls, and prosthesis dislocation or fracture. However, the prevalence and pathophysiology of OI has not been established after THA. This study evaluated the cardiovascular response and tissue oxygen...
متن کاملCommon syndromes of orthostatic intolerance.
The autonomic nervous system, adequate blood volume, and intact skeletal and respiratory muscle pumps are essential components for rapid cardiovascular adjustments to upright posture (orthostasis). Patients lacking sufficient blood volume or having defective sympathetic adrenergic vasoconstriction develop orthostatic hypotension (OH), prohibiting effective upright activities. OH is one form of ...
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ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 2002
ISSN: 0022-3751,1469-7793
DOI: 10.1113/jphysiol.2001.013372