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Orthostatic intolerance

Orthostatic intolerance is the failure of the body to properly adjust to an upright position, especially with respect to blood flow, heart rate, and blood pressure.

A common manifestation of chronic orthostatic intolerance is postural orthostatic tachycardia syndrome.

The loss of orthostatic tolerance is also an undesirable consequence of human adaptation to space and has often been emulated in head-down bed rest studies.

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Pyridostigmine reduced orthostatic intolerance. (Heart Rate Reduced on Tilt Table Testing).(Brief Article) : An article from: Internal Medicine News $5.95 Autogenic-feedback training a potential treatment for post-flight orthostatic intolerance in aerospace crews (SuDoc NAS 1.15:108785)
Computer simulation studies in fluid and calcium regulation and orthostatic intolerance final report (SuDoc NAS 1.26:171869)

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