The genome of the organism that produces the world's most lethal toxin has been revealed. This toxin is the major weapon in the genome of Clostridium botulinum: less than two kg is enough to kill every person on the planet.
Tension pneumothorax: The most serious type of pneumothorax, this occurs when the pressure in the pleural space is greater than the atmospheric pressure, either because air becomes trapped in the pleural space or because the entering air is from a positive-pressure mechanical ventilator.
What Causes a Collapsed Lung. A pneumothorax means air (pneumo) in the chest (thorax). This happens when air leaks into the space between your lungs and your inner chest wall. Normally this area is what we call a âpotential spaceâ because the lungs touch the chest wall.