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.
Pleural effusion (large amounts of liquid in the. pleural space) or pneumothorax (air in the pleural space) can lead to a partial or. complete compression of the lung. If a tear or hole develops in the lung, air escapes into the pleural space, causing a pneumothorax. Sometimes, air goes into the pleural space and is.