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Results for “Gravity Suits”

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At least 55 records · Page 3Linked to original sources
PubMed1983

Depression of respiratory function by pneumatic antishock trousers in traumatic quadriplegia.

A case of mild hypoventilation associated with an incompletely inflated pneumatic antishock suit in traumatic quadriplegia is presented. Pulmonary function studies were performed on the same patient 23 days later. Base line studies were performed and then repeated with the antishock suit inflated to 40 and then 100 mm Hg. Measurements were made of tidal volume (Vt), inspiratory reserve volume (IRV), expiratory reserve volume (ERV), forced vital capacity (FVC), forced vital capacity in one second (FEV1), and maximum voluntary ventilation (MVV). With increasing suit pressures, all parameters decreased with the exception of the ERV, which was initially zero. Traumatic quadriplegia must be added to the list of disorders in which caution must be used when considering the use of the abdominal compartment of the pneumatic antishock suit.

Accidents, Traffic↗
PubMed1988

Anti-G suit inflation rate requirements.

Relaxed +Gz rapid-onset tolerances were measured on the human-use centrifuge at the USAF School of Aerospace Medicine, using male research subjects with and without inflated anti-G suits. Tolerance at 6 G.s-1 onset rates were 0.2-0.3 G lower than those measured with 1 G.s-1 onset rates, thus suggesting the existence of another relaxed G tolerance measurement called very high onset G. Baroceptor effect was considered the reason for this difference. Delays of a mean of 3.3 s in inflating the anti-G suit did not change relaxed G tolerances at 6 G.s-1 onset rates; however, with a 4.2-s mean delay, light-loss tolerance criteria occurred sooner during the G exposure. Tolerances to 7 G with 6 G.s-1 onset rates, during which the subjects had to perform the anti-G straining maneuver (AGSM), required a mean delay of 2.8 s in six subjects before a noticeable change in light-loss criteria occurred--a mean delay of 2.0 s resulted in no change in light-loss criteria from zero delay control inflation rates. These results clearly indicate that the inflation of the anti-G suit can be delayed by at least 1 s without compromising anti-G suit protection.

Acceleration↗