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Oxygen in the treatment of spinal cord decompression sickness
decompression sickness spinal cord Oxygen spinal evoked potentials animal dog
2009/7/15
Twenty-five anesthetized dogs were used to find the optimum Po2 for the delayed treatment of spinal cord decompression sickness (DCS). They were instrumented for the measurement of physiological varia...
Estimation of oxygen uptake from heart rate response to undersea work
human Oxygen Consumption cardiac undersea work exercise ergometer human
2009/7/15
The efficacy of using a diver's heart rate (HR) response to work performed formed in the open sea to estimate the oxygen uptake (VO2) and work stress by general and depth-specific regression equations...
Effects of helium-oxygen and hyperbaric helium-oxygen environment on drug-metabolizing enzyme activity in rat liver
heliox drug enzymology Cocaine Morphine O-Demethylase animal rat
2009/7/15
The effects of room-air normoxic (22 degrees C +/- 1 degree C), 1.2-ATA He-O2 (400 mmHg PO2, 29.0 degree C +/- 1 degree C), and 21-ATA He-O2 (400 mmHg PO2, 32.5 degrees C +/- 1 degree C) environments ...
Gas phase formation and Doppler monitoring during decompression with elevated oxygen
decompression human
2009/7/15
Subjects in 150 man-dives were precordially monitored with a 5-MHz Doppler ultrasound bubble detector. These measurements were made during a series of dives conducted to test decompression tables that...
Decompression from a deep nitrogen/oxygen saturation dive--a case report
decompression nitrogen human nitrox
2009/7/15
Ten divers participated in a 4.5 d nitrogen/oxygen saturation dive to 165 fsw. There were daily 2 h excursions to 61 msw (200 fsw). The divers breathed air during the excursions and 0.51 bar (0.5 atm)...
Soleus H reflex studies in humans at 40-70 bar in helium-oxygen-nitrogen (trimix)
decompression human trimix Hoffmann reflex
2009/7/15
Excitability of the Hoffmann (H) reflex was studied in 6 subjects at pressures of 40 to 70 bar during two trimix exposures (10percent N2, 0.5 bar O2, the remainder He; Atlantis II and III simulated di...
Hyperbaric oxygen therapy for radiation myelitis
radionecrosis radiation myelitis Spinal Cord animal rat
2009/7/14
Radiation therapy may damage healthy tissues adjacent to tumor. Hyperbaric oxygen therapy (HBO) is useful in treating soft tissue and osteoradionecrosis. In addition, HBO has been recommended to treat...
An effect of CO2 on the maximum safe direct decompression to 1 bar from oxygen-nitrogen saturation
saturation nitrogen human carbon dioxide
2009/7/14
An investigation into the maximum safe decompression step from oxygen nitrogen saturation to 1 bar was carried out with and without the presence of 0.02 bar carbon dioxide. The series, Islander 1, inv...
CNS oxygen toxicity in the rat: role of ambient illumination
hyperbaric CNS oxygen toxicity Central Nervous System animal rat
2009/7/14
The effect of ambient illumination on sensitivity to CNS oxygen toxicity was studied in awake male rats. Continuous recording of the EEG was obtained with chronically implanted cortical electrodes. Th...
Central nervous system oxygen toxicity in closed circuit scuba divers II
human oxygen toxicity Central nervous system
2009/7/14
Central nervous system oxygen toxicity is currently the limiting factor in underwater swimming/diving operations using closed-circuit oxygen equipment. A dive series was conducted at the Navy Experime...
All U.S. Navy diving candidates are screened for their tolerance to hyperbaric oxygen by taking an oxygen tolerance test (OTT). During a recent experimental oxygen dive series at the U.S. Navy Experim...
Reversibility of oxygen-induced injury to the alveolar epithelium: an ultrastructural study
pulmonary oxygen toxicity animal rabbit cytochrome C alveolar epithelium
2009/7/14
Continuous exposure of rabbits to 100 percent O2 at one atmosphere (1 ATA) for 48 h damages the alveolar epithelium increasing its permeability to lipid insoluble molecules. The purpose of this study ...
Hyperbaric oxygen therapy in experimentally induced acute cerebral ischemia
acute cerebral ischemia animal rat brain
2009/7/14
Effects of hyperbaric oxygen (HBO) on acute cerebral ischemia were studied in spontaneously hypertensive rats, which had the carotid artery bilaterally ligated. The animals were exposed to HBO (100per...
Blood glucose as a predictive measure for central nervous system oxygen toxicity in conscious rats
hyperbaric oxygen toxicity rats Blood glucose
2009/7/14
Blood glucose concentration was measured during continuous electrocorticographic (ECoG) recording in conscious rats exposed to 3 and 5 atmosphere absolute oxygen (ATA O2). The preconvulsive oxygen-ind...
CNS oxygen toxicity in oxygen-inert gas mixtures
oxygen toxicity nitrogen hyperbaric animal rat
2009/7/14
Central nervous system oxygen toxicity in hyperbaric oxygen-inert gas mixtures was studied by exposing male rats to various gas mixtures having the same oxygen partial pressure and varying pressures o...