Physics and barotrauma Flashcards
1 Bar is equal to:
a) 750 mmhg
b) 14.5 psi
c) 1000 mb
d) All of the above
d) All of the above
4000 ppm is equal to:
a) 40%
b) 4%
c) 04%
d) 0.04%
d) 0.04%
Henry’s law relates to:
a) Pressure-volume relationship
b) Partial pressures
c) Solubility of gasses
d) Pressure-volume-temperature relationship
c) Solubility of gasses
The most significant draw back to using helium in breathing mixes is:
a) Increased narcosis
b) Increased heat transfer
c) Decreased solubility
d) Vocal change
b) Increased heat transfer
The recommended partial pressure for treatment in a recompression chamber is:
a) 1.4 bar absolute
b) 1.8 bar absolute
c) 2.4 bar absolute
d) 2.8 bar absolute
d) 2.8 bar absolute
Signs and symtoms of hypercapnia include:
a) Increased breathing rate, nausea, headache
b) Cool-clammy skin, low respirations, red lips
c) Paleness, irritable cough, tinnitus
d) Cyanosis, low pulse, chest pain
a) Increased breathing rate, nausea, headache
A pneumothorax is the collection of …….. between the pleural linings:
a) Blood
b) Air
c) Water
d) Surfactant
b) Air
What is the name of the tube that connects the throat with the middle ear?
a) Pinna
b) Cochlean
c) Tympanic
d) Eustacian
d) Eustacian
The intra-pleural pressure difference required to induce pulmonary barotrauma is approximately equivalent to:
a) 760 mmHG
b) 10 msw
c) 100 to 123 mb
d) All of the above
c) 100 to 123 mb
During a rapid ascent, expanding gas ruptures the diver’s pleural linings; he will suffer from:
a) AGE
b) Pneumothorax
c) Aural barotrauma
d) Emphysema
b) Pneumothorax
The correct place for emergency needle decompression in a tension pneumothorax is:
a) 2nd intercostal space, mid cavicular line
b) 6th intercostal space, below arm pit
c) Anywhere in the upper chest quadrant
d) It should never be attempted
a) 2nd intercostal space, mid cavicular line
The most common form of barotrauma reporeted by divers is:
a) Pulmonary
b) Aural
c) Tooth
d) Gastric
b) Aural
