Entrapped Gases

Question 1

How does elevation affect trapped gases in the body?

A. An increase in altitude tends to cause gas contraction.
B. An increase in altitude is more likely to cause ear pain than on the descent.
C. An increase in altitude can cause stomach discomfort.
D. A decrease in altitude tends to cause gas expansion.

Answer 1

C. An increase in altitude can cause stomach discomfort

Question 2

How can trapped gases in the body affect a person in an aircraft?

A. A rapid ascent might cause stomach pain.
B. Sinus pain might occur during ascent.
C. A descent might cause the eardrum to be sucked inwards.
D. all of the above.

Answer 2

D. all of the above

Question 3

What can be used to treat decompression sickness?

A. penicillin.
B. decongestant.
C. hyperbaric chamber.
D. painkillers.

Answer 3

C. hyperbaric chamber

Question 4

What are some of the ways in which a pilot can reduce the effect of barotrauma? Select all that apply:

A. where an unpressurised suit.
B. valsalva manoeuvre.  
C. increase rate of descent or ascent.
D. chew, swallow or yawn.  
E. avoid flying while suffering from nasal, ear, or respiratory conditions.

Answer 4

B. valsalva manoeuvre
D. chew, swallow or yawn
E. avoid flying while suffering from nasal, ear, or respiratory conditions

Question 5

Which of the following is NOT a sign or symptom of barotrauma?

A. pain in the upper teeth.
B. severe pain in the ears.
C. pain above the eyebrows.
D. severe pain felt in the lungs.

Answer 5

D. severe pain felt in the lungs