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Very Few Exercise-Induced Arterialized Gas Bubbles Reach the Cerebral Vasculature
SCUBA DIVING GAS EMBOLI GRADING ARTERIAL GAS EMBOLI INTRAPULMONARY ATERIAL-VENOUS ANASTOMOSES
2017/4/20
Introduction: Arterialization of venous gas emboli (VGE) formed after surfacing from SCUBA diving can become arterial gas emboli (AGE) through intrapulmonary arterial-venous anastomoses that open with...
Customized Soap Bubbles Set to Transform Drug and Vaccine Delivery
Soap Bubbles Transform Drug Vaccine Delivery
2015/3/4
When University of Maryland Professors Philip DeShong and Daniel Stein began tagging soap bubbles with biomolecules, they had no idea this technology would one day be poised to cha...
Ultrasonic imaging system for the study of decompression-induced gas bubbles
Ultrasonic Imaging equipment bubble
2009/7/17
An high-resolution pulse echo ultrasonic imaging system has been developed to study decompression-induced gas bubbles. It was considered necessary that the system be capable of detecting gas bubbles w...
Correlation between decompression sickness and circulating bubbles in 232 divers
decompression sickness human bubbles
2009/7/17
Doppler monitoring examinations were carried out during 67 simulated helium-oxygen dives in the pressure chambers of the Centre d'Etudes Hyperbares (CEH) COMEX Marseille, and involved a total of 232 C...
Origin and time course of gas bubbles following rapid decompression in the hamster
decompression bubble animal hamster
2009/7/15
Because conflicting results have been obtained in studies of the hamster (Mesocricetus auratus) microcirculation following rapid decompression, we were interested in the origin of bubbles in the cheek...
Fetal and maternal bubbles detected noninvasively in sheep and goats following hyperbaric decompression
decompression animal sheep goat Fetal maternal Pregnancy bubble
2009/7/14
Pregnant sheep and goats were compressed with air to an equivalent depth of 49 msw (160 fsw) for bottom times ranging from 5 to 15 min. Maternal (precordial) and fetal (umbilical artery) circulation w...
Effect of intravascular bubbles on perfusate flow and gas elimination rates following simulated decompression of a model tissue
human Health diving decompression
2009/7/14
This study deals with the monitoring of the elimination rates of gases from a porous cylindrical model of the human tissue during simulated single-stop decompression schedules. The data suggest the pr...
Venous gas embolism: time course of residual pulmonary intravascular bubbles
CO2 carbon dioxide nitrogen pulmonary air animal dog Venous gas embolism
2009/7/9
The time course of pulmonary intravascular air emboli was studied in anesthetized dogs. In one series of experiments air was infused into the right atrium at 0.10 ml.kg-1.min-1 or 0.25 ml.kg-1.min-1 f...
Influence of heliox,oxygen,and N2O-O2 breathing on N2 bubbles in adipose tissue
oxygen heliox decompression animal rat nitrous oxide adipose tissue bubble growth nitrogen elimination
2009/7/9
Bubbles in rat adipose tissue were studied at 1 bar after decompression from an exposure to air at 3.3 bars (absolute) for 4 h. During air breathing the bubbles grew throughout the observation period....
Effect of peripheral temperature on the formation of venous gas bubbles
cold decompression bubble formation peripheral temperature extremities
2009/7/9
Temperature of the tissue affects the many components involved in the formation of tissue gas phase formation: diffusion, perfusion, and inert gas solubility. Since the effects of perfusion and inert ...
Ethanol and venous bubbles after decompression in humans
decompression Ethanol human alcohol
2009/7/9
We exposed 34 subjects to a 48-h, 6.25-msw dive, and administered ethanol (0.5-1.0 ml pure ethanol.kg-1 body weight) orally to 11 of them immediately after direct decompression. Doppler monitoring of ...
Effect of He-O2,O2,and N2O-O2 breathing on injected bubbles in spinal white matter
oxygen heliox decompression animal rat nitrous oxide spinal white matter
2009/7/8
Injected air bubbles in spinal white matter in the rat were studied at 1 bar after decompression from an exposure to air at 3.1 bar (absolute) for 4 h. During air breathing all injected bubbles grew f...
In vitro activation of human complement by nitrogen bubbles
decompression nitrogen human complement
2009/7/8
Complement activation may be responsible for some of the symptoms of decompression sickness. In the present study, complement activation was studied by exposing human sera with or without red blood ce...
Simulation of the dynamics of decompression sickness bubbles and the generation of new bubbles
decompression nitrogen bubbles
2009/7/8
This communication introduces a system of equations for simulating the dynamics of growth and decay of decompression bubbles. The equations are solved by a numerical method and account for gas diffusi...
Relationship between venous bubbles and hemodynamic responses after decompression in pigs
decompression animal pig pulmonary model
2009/6/12
We present a new pig model for studying relationships between venous gas bubbles and physiologic effects during and after decompression. Sixteen pigs were anesthetized to allow spontaneous breathing. ...