Subjects still use the anti-G breathing maneuver in high-G situations, he said, but it is not as stressful as with conventional anti-G suits and they can converse normally without positive pressure breathing interfering.
12.
One kind of ventilator is called an intermittent positive pressure breathing, or IPPB, unit; it puts compressed gas into the lungs until a preset pressure is reached, then allows passive exhalation through a valve.
13.
Combining the rest step with pressure breathing _ normal inhaling followed by hard, whoooshing exhaling that rids the lungs of excess carbon dioxide _ has helped thousands of climbers to mountain summits much higher than Rainier.
14.
When commercial divers operate at great depths, they often spend prolonged hours in diving bells under pressure breathing a breathing gas mix like watch case and crystal, this effect can cause damage to the watch, such as the crystal popping off.
15.
Sid Leverett, George Mohr, Russell Burton and Kent Gillingham significantly enhanced aircrew survival through initiatives that produced the Advanced Technology Anti-G suit ( ATAGS ), the high pressure ready flow anti-G valve, anti-G pilot conditioning program to reduce the potential for G-loss of consciousness ( G-LOC ) and subsequent improvements to aviator helmet / oxygen mask ensembles that provided positive pressure breathing such as Combat Edge.
