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CO2 retention with minimal symptoms but severe dysfunction during wet simulated dives to 6.8 atm abs
exercise hyperbaric air chamber carbon dioxide cognitive behavior
2009/7/9
During wet dives in a hyperbaric chamber to 6.8 atm abs (690 kPa), air breathing subjects were experimentally exposed to external breathing resistance. Two of them were, unbeknownst to themselves, sev...
Cardiovascular responses to upright tilt in man during acute exposure to 3 atm abs air
cardiovascular hyperbaric cardiac output position
2009/7/8
To examine the effect of acute hyperbaric exposure on cardiovascular response to orthostasis, a passive 70 degrees head-up tilt (HUT) test was performed for 15 min in a simulated compressed-air hyperb...
ECG changes during the experimental human dive HYDRA 10 (71 atm/7,200 kPa)
saturation decompression hydrogen human
2009/6/9
Electrocardiogram (ECG) analysis was performed in three human divers during a 71 atm (7,200 kPa) saturation dive (COMEX HYDRA 10 experiment). The inhaled gas mixture was slightly hyperoxic; its compos...
Diurnal renal responses in man to water loading at sea level and 31 atm abs
hyperbaric renal hydration Diuresis Circadian Rhythm
2009/6/9
The hyperbaric environment causes a sustained diuresis accompanied by normal water intake and a decrease in insensible water loss. The maintained water intake may be necessary for the maintenance of w...
Doppler-echocardiography study of cardiac function during a 36 atm (3,650 kPa) human dive
saturation pulmonary cardiac output human
2009/6/8
To determine the influence of a saturation dive on cardiac function, Doppler-echocardiographic measurements were compared at sea level and during a 36 atm (3,650 kPa) He-O2 dive (gas density: 7 g/lite...
Effects of breathing air at 4 atm abs:evidence for a change in strategy
hyperbaric air breathing
2009/6/5
The effect of breathing air at 4 atm abs on two tasks was investigated. For the recognition memory task, subjects learned a list of symbols in anticipation of a recognition test. The second task was a...
Estimating Skin Respiration from Transcutaneous PO2/PCO2 at 1 and 2 atm abs on Normal and Inflamed Skin
Transcutaneous skin inflamed
2009/5/8
Abbot NC, Beck JS, Carnochan FM, Spence VA, James PB. Estimating Skin Respiration from Transcutaneous PO2/PCO2 at 1 and 2 atm abs on Normal and Inflamed Skin. J. Hyperbaric Med 1990; 5(2):91-102.
Transcutaneous Partial Pressure of Oxygen Measured in a Monoplace Hyperbaric Chamber at 1, 1.5, and 2 atm abs Oxygen
oxygen Chamber Monoplace Transcutaneous
2009/5/8
Hart GB, Meyer GW, Strauss MB, Messina VJ. Transcutaneous Partial Pressure of Oxygen Measured in a Monoplace Hyperbaric Chamber at 1, 1.5, and 2 atm abs Oxygen. J. Hyperbaric Med 1990; 5(4):223-229. ...
O2 pressures between 0.12 and 2.5 atm abs, circulatory function, and N2 elimination
rebreather decompression nitrogen elimination hypoxiaoxygen
2009/3/25
To study the effects of inhaled oxygen pressures on N2 elimination, 72, 2-h washouts were performed in 6 subjects at oxygen pressures of 0.12, 0.2, 1.0, 2.0, and 2.5 atm abs using a closed circuit sys...