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Clinical characterization and etiology of space motion sickness.

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An inflight, clinically-oriented investigation of SMS was begun on STS-4 and revealed the following: compared to motion sickness on Earth, autonomic signs are significantly different in space motion sickness (SMS) vs. motion sickness (MS) in that sweating is not present, pallor or flushing may be

Gastrointestinal motility in space motion sickness.

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Gastrointestinal (Gl) symptoms in space motion sickness (SMS) are significantly different from those in ordinary motion sickness (MS). Vomiting is sudden, often unexpected, infrequent, never prolonged and usually without nausea. Inflight bowel sounds are absent in those with SMS but present after

Space motion sickness.

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Space Motion Sickness (SMS) is the malady which frequently occurs shortly after attainment of sustained exposure to hypogravity. It is characterised by a variety of symptoms, which may proceed to nausea and eventually vomiting. Natural adaptation usually occurs if exposure to hypogravity is

[Mechanism of development of space motion sickness].

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Astronauts and scientists are scheduled to stay aboard the International Space Station (ISS) for three-month periods, and various problems relating to the human ability to live in space for such long periods of time, as well as medical problems, are being studied. For the crews that have operated

Stimulation of the semicircular canals via the rotary chair as a means to test pharmacologic countermeasures for space motion sickness.

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OBJECTIVE Space motion sickness is currently treated pharmacologically with the empiric use of the H1 antihistamine promethazine, but use of this intervention is limited by the side effect of significant sedation. This creates a dilemma, as full cognition is particularly important during the same

Preflight virtual reality training as a countermeasure for space motion sickness and disorientation.

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BACKGROUND Research suggests that preflight training in virtual reality devices can simulate certain aspects of microgravity and may prove to be an effective countermeasure for space motion sickness (SMS) and spatial disorientation (SD). It is hypothesized that exposing subjects preflight to

Treatment efficacy of intramuscular promethazine for space motion sickness.

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Intramuscular promethazine and its efficacy in the treatment of Space Motion Sickness (SMS) were evaluated using standardized questions administered during postflight debriefings to crewmembers immediately after their first Shuttle flight. Space Motion Sickness was graded as none, mild, moderate, or

New pharmacologic approaches to the prevention of space/motion sickness.

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Fundamental approaches in selection of new agents for evaluation in prevention of space/motion sickness (SMS) are reviewed. The discussion centers on drugs under investigation at the Johnson Space Center. Methodology that employs the rotating chair for measuring SMS symptomatology and susceptibility

Managing space motion sickness.

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Space motion sickness is a well-recognized problem for space flight and affects 73% of crewmembers on the first 2 or 3 days of their initial flight. Illness severity is variable, but over half of cases are categorized as moderate to severe. Management has included elimination of provocative

Motion sickness: more than nausea and vomiting.

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Motion sickness is a complex syndrome that includes many features besides nausea and vomiting. This review describes some of these factors and points out that under normal circumstances, many cases of motion sickness go unrecognized. Motion sickness can occur during exposure to physical motion,

Space motion sickness: incidence, etiology, and countermeasures.

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Space motion sickness is experienced by 60% to 80% of space travelers during their first 2 to 3 days in microgravity and by a similar proportion during their first few days after return to Earth. Space motion sickness symptoms are similar to those in other forms of motion sickness; they include:

Spacelab experiments on space motion sickness.

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Recent research results from ground and flight experiments on motion sickness and space sickness conducted by the Man Vehicle Laboratory are reviewed. New tools developed include a mathematical model for motion sickness, a method for quantitative measurements of skin pallor and blush in ambulatory

Changes in gastric myoelectric activity during space flight.

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The purpose of the present study was to examine postprandial myoelectric activity of the stomach and gastric activity associated with space motion sickness using electrogastrography. Three crewmembers participated in this investigation. Preflight, subjects exhibited normal postprandial responses to

Issues of health care under weightlessness.

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This review will address issues of effects of space flights on the body. Cardiovascular deconditioning often induce symptoms like orthostatic intolerance after flight, and during flight there will be space motion sickness during the first few days with headache, malaise, nausea and eventually

Neurovestibular symptoms following space flight.

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Neurovestibular symptoms experienced by astronauts in the post-flight period were examined using data from medical debriefs contained in the NASA Longitudinal Study of Astronaut Health database. Ten symptoms were identified (clumsiness, difficulty concentrating, persisting sensation aftereffects,

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